Home / 121,516,137.36-167,693,845.32-66,510,812.88

Finding the Fourth Proportional to 121,516,137.36, 167,693,845.32 and 66,510,812.88

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Solution

The fourth proportional to 121,516,137.36, 167,693,845.32 and 66,510,812.88 is: 91,785,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,516,137.36 : 167,693,845.32 = 66,510,812.88 : x
  2. Step 2: Convert to fraction form
    121,516,137.36/167,693,845.32 = 66,510,812.88/x
  3. Step 3: Cross multiply
    121,516,137.36x = 167,693,845.32 × 66,510,812.88
  4. Step 4: Simplify right side
    121,516,137.36x = 11,153,453,967,206,184
  5. Step 5: Solve for x
    x = 11,153,453,967,206,184/121,516,137.36
  6. Step 6: Final answer
    x = 91,785,784.25

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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.