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Finding the Fourth Proportional to 124,802.71, 172,207.83 and 71,088.79

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Solution

The fourth proportional to 124,802.71, 172,207.83 and 71,088.79 is: 98,091.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,802.71 : 172,207.83 = 71,088.79 : x
  2. Step 2: Convert to fraction form
    124,802.71/172,207.83 = 71,088.79/x
  3. Step 3: Cross multiply
    124,802.71x = 172,207.83 × 71,088.79
  4. Step 4: Simplify right side
    124,802.71x = 12,242,046,263.23
  5. Step 5: Solve for x
    x = 12,242,046,263.23/124,802.71
  6. Step 6: Final answer
    x = 98,091.19

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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.