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Finding the Fourth Proportional to 112,682.70, 155,502.12 and 62,381.70

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Solution

The fourth proportional to 112,682.70, 155,502.12 and 62,381.70 is: 86,086.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,682.70 : 155,502.12 = 62,381.70 : x
  2. Step 2: Convert to fraction form
    112,682.70/155,502.12 = 62,381.70/x
  3. Step 3: Cross multiply
    112,682.70x = 155,502.12 × 62,381.70
  4. Step 4: Simplify right side
    112,682.70x = 9,700,486,599.20
  5. Step 5: Solve for x
    x = 9,700,486,599.20/112,682.70
  6. Step 6: Final answer
    x = 86,086.74

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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.