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Finding the Fourth Proportional to 153,825.60, 230,774.85 and 78,957.30

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Solution

The fourth proportional to 153,825.60, 230,774.85 and 78,957.30 is: 118,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,825.60 : 230,774.85 = 78,957.30 : x
  2. Step 2: Convert to fraction form
    153,825.60/230,774.85 = 78,957.30/x
  3. Step 3: Cross multiply
    153,825.60x = 230,774.85 × 78,957.30
  4. Step 4: Simplify right side
    153,825.60x = 18,221,359,063.91
  5. Step 5: Solve for x
    x = 18,221,359,063.91/153,825.60
  6. Step 6: Final answer
    x = 118,454.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.