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Finding the Fourth Proportional to 157,937.81, 217,968.23 and 89,939.93

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Solution

The fourth proportional to 157,937.81, 217,968.23 and 89,939.93 is: 124,125.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,937.81 : 217,968.23 = 89,939.93 : x
  2. Step 2: Convert to fraction form
    157,937.81/217,968.23 = 89,939.93/x
  3. Step 3: Cross multiply
    157,937.81x = 217,968.23 × 89,939.93
  4. Step 4: Simplify right side
    157,937.81x = 19,604,047,348.42
  5. Step 5: Solve for x
    x = 19,604,047,348.42/157,937.81
  6. Step 6: Final answer
    x = 124,125.11

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1.5x scale

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.