Home / 113,081.40-156,060.31-74,774.38

Finding the Fourth Proportional to 113,081.40, 156,060.31 and 74,774.38

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Solution

The fourth proportional to 113,081.40, 156,060.31 and 74,774.38 is: 103,193.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,081.40 : 156,060.31 = 74,774.38 : x
  2. Step 2: Convert to fraction form
    113,081.40/156,060.31 = 74,774.38/x
  3. Step 3: Cross multiply
    113,081.40x = 156,060.31 × 74,774.38
  4. Step 4: Simplify right side
    113,081.40x = 11,669,312,922.86
  5. Step 5: Solve for x
    x = 11,669,312,922.86/113,081.40
  6. Step 6: Final answer
    x = 103,193.92

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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.