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Finding the Fourth Proportional to 113,418.62, 156,518.70 and 63,117.62

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Solution

The fourth proportional to 113,418.62, 156,518.70 and 63,117.62 is: 87,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,418.62 : 156,518.70 = 63,117.62 : x
  2. Step 2: Convert to fraction form
    113,418.62/156,518.70 = 63,117.62/x
  3. Step 3: Cross multiply
    113,418.62x = 156,518.70 × 63,117.62
  4. Step 4: Simplify right side
    113,418.62x = 9,879,087,829.49
  5. Step 5: Solve for x
    x = 9,879,087,829.49/113,418.62
  6. Step 6: Final answer
    x = 87,102.87

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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.