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Finding the Fourth Proportional to 153,911.20, 230,818.80 and 60,445.60

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Solution

The fourth proportional to 153,911.20, 230,818.80 and 60,445.60 is: 90,649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,911.20 : 230,818.80 = 60,445.60 : x
  2. Step 2: Convert to fraction form
    153,911.20/230,818.80 = 60,445.60/x
  3. Step 3: Cross multiply
    153,911.20x = 230,818.80 × 60,445.60
  4. Step 4: Simplify right side
    153,911.20x = 13,951,980,857.28
  5. Step 5: Solve for x
    x = 13,951,980,857.28/153,911.20
  6. Step 6: Final answer
    x = 90,649.55

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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.