Home / 102,402.72-141,342.48-66,690.72

Finding the Fourth Proportional to 102,402.72, 141,342.48 and 66,690.72

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Solution

The fourth proportional to 102,402.72, 141,342.48 and 66,690.72 is: 92,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,402.72 : 141,342.48 = 66,690.72 : x
  2. Step 2: Convert to fraction form
    102,402.72/141,342.48 = 66,690.72/x
  3. Step 3: Cross multiply
    102,402.72x = 141,342.48 × 66,690.72
  4. Step 4: Simplify right side
    102,402.72x = 9,426,231,757.79
  5. Step 5: Solve for x
    x = 9,426,231,757.79/102,402.72
  6. Step 6: Final answer
    x = 92,050.60

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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.