Home / 129,445,688.26-178,635,042.93-69,906,979.36

Finding the Fourth Proportional to 129,445,688.26, 178,635,042.93 and 69,906,979.36

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Solution

The fourth proportional to 129,445,688.26, 178,635,042.93 and 69,906,979.36 is: 96,471,627.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,445,688.26 : 178,635,042.93 = 69,906,979.36 : x
  2. Step 2: Convert to fraction form
    129,445,688.26/178,635,042.93 = 69,906,979.36/x
  3. Step 3: Cross multiply
    129,445,688.26x = 178,635,042.93 × 69,906,979.36
  4. Step 4: Simplify right side
    129,445,688.26x = 12,487,836,259,080,224
  5. Step 5: Solve for x
    x = 12,487,836,259,080,224/129,445,688.26
  6. Step 6: Final answer
    x = 96,471,627.81

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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.