Home / 112,370.32-155,064.17-61,372.72

Finding the Fourth Proportional to 112,370.32, 155,064.17 and 61,372.72

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Solution

The fourth proportional to 112,370.32, 155,064.17 and 61,372.72 is: 84,690.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,370.32 : 155,064.17 = 61,372.72 : x
  2. Step 2: Convert to fraction form
    112,370.32/155,064.17 = 61,372.72/x
  3. Step 3: Cross multiply
    112,370.32x = 155,064.17 × 61,372.72
  4. Step 4: Simplify right side
    112,370.32x = 9,516,710,234.70
  5. Step 5: Solve for x
    x = 9,516,710,234.70/112,370.32
  6. Step 6: Final answer
    x = 84,690.60

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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.