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Finding the Fourth Proportional to 124,646.43, 172,024.53 and 74,345.43

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Solution

The fourth proportional to 124,646.43, 172,024.53 and 74,345.43 is: 102,604.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,646.43 : 172,024.53 = 74,345.43 : x
  2. Step 2: Convert to fraction form
    124,646.43/172,024.53 = 74,345.43/x
  3. Step 3: Cross multiply
    124,646.43x = 172,024.53 × 74,345.43
  4. Step 4: Simplify right side
    124,646.43x = 12,789,237,653.40
  5. Step 5: Solve for x
    x = 12,789,237,653.40/124,646.43
  6. Step 6: Final answer
    x = 102,604.12

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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.