Home / 102,312.72-141,105.24-66,475.08

Finding the Fourth Proportional to 102,312.72, 141,105.24 and 66,475.08

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Solution

The fourth proportional to 102,312.72, 141,105.24 and 66,475.08 is: 91,679.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,312.72 : 141,105.24 = 66,475.08 : x
  2. Step 2: Convert to fraction form
    102,312.72/141,105.24 = 66,475.08/x
  3. Step 3: Cross multiply
    102,312.72x = 141,105.24 × 66,475.08
  4. Step 4: Simplify right side
    102,312.72x = 9,379,982,117.42
  5. Step 5: Solve for x
    x = 9,379,982,117.42/102,312.72
  6. Step 6: Final answer
    x = 91,679.53

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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.