Home / 121,720,784,119.92-167,904,893,767.08-75,915,535,977.48

Finding the Fourth Proportional to 121,720,784,119.92, 167,904,893,767.08 and 75,915,535,977.48

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Solution

The fourth proportional to 121,720,784,119.92, 167,904,893,767.08 and 75,915,535,977.48 is: 104,719,913,659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,720,784,119.92 : 167,904,893,767.08 = 75,915,535,977.48 : x
  2. Step 2: Convert to fraction form
    121,720,784,119.92/167,904,893,767.08 = 75,915,535,977.48/x
  3. Step 3: Cross multiply
    121,720,784,119.92x = 167,904,893,767.08 × 75,915,535,977.48
  4. Step 4: Simplify right side
    121,720,784,119.92x = 12,746,590,003,569,717,411,840
  5. Step 5: Solve for x
    x = 12,746,590,003,569,717,411,840/121,720,784,119.92
  6. Step 6: Final answer
    x = 104,719,913,659.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.