Home / 143,838,303.72-198,448,287.82-81,914,798.40

Finding the Fourth Proportional to 143,838,303.72, 198,448,287.82 and 81,914,798.40

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Solution

The fourth proportional to 143,838,303.72, 198,448,287.82 and 81,914,798.40 is: 113,014,760.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,838,303.72 : 198,448,287.82 = 81,914,798.40 : x
  2. Step 2: Convert to fraction form
    143,838,303.72/198,448,287.82 = 81,914,798.40/x
  3. Step 3: Cross multiply
    143,838,303.72x = 198,448,287.82 × 81,914,798.40
  4. Step 4: Simplify right side
    143,838,303.72x = 16,255,851,489,600,476
  5. Step 5: Solve for x
    x = 16,255,851,489,600,476/143,838,303.72
  6. Step 6: Final answer
    x = 113,014,760.81

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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.