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Finding the Fourth Proportional to 157,555.91, 217,429.74 and 85,935.93

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Solution

The fourth proportional to 157,555.91, 217,429.74 and 85,935.93 is: 118,593.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,555.91 : 217,429.74 = 85,935.93 : x
  2. Step 2: Convert to fraction form
    157,555.91/217,429.74 = 85,935.93/x
  3. Step 3: Cross multiply
    157,555.91x = 217,429.74 × 85,935.93
  4. Step 4: Simplify right side
    157,555.91x = 18,685,026,916.56
  5. Step 5: Solve for x
    x = 18,685,026,916.56/157,555.91
  6. Step 6: Final answer
    x = 118,593.00

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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.