Home / 111,385.18-153,697.38-63,641.62

Finding the Fourth Proportional to 111,385.18, 153,697.38 and 63,641.62

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Solution

The fourth proportional to 111,385.18, 153,697.38 and 63,641.62 is: 87,817.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,385.18 : 153,697.38 = 63,641.62 : x
  2. Step 2: Convert to fraction form
    111,385.18/153,697.38 = 63,641.62/x
  3. Step 3: Cross multiply
    111,385.18x = 153,697.38 × 63,641.62
  4. Step 4: Simplify right side
    111,385.18x = 9,781,549,484.47
  5. Step 5: Solve for x
    x = 9,781,549,484.47/111,385.18
  6. Step 6: Final answer
    x = 87,817.34

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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.