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Finding the Fourth Proportional to 131,547.96, 181,541.10 and 74,957.88

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Solution

The fourth proportional to 131,547.96, 181,541.10 and 74,957.88 is: 103,444.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,547.96 : 181,541.10 = 74,957.88 : x
  2. Step 2: Convert to fraction form
    131,547.96/181,541.10 = 74,957.88/x
  3. Step 3: Cross multiply
    131,547.96x = 181,541.10 × 74,957.88
  4. Step 4: Simplify right side
    131,547.96x = 13,607,935,988.87
  5. Step 5: Solve for x
    x = 13,607,935,988.87/131,547.96
  6. Step 6: Final answer
    x = 103,444.68

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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.