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Finding the Fourth Proportional to 153,999.30, 230,826.15 and 87,471.30

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Solution

The fourth proportional to 153,999.30, 230,826.15 and 87,471.30 is: 131,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,999.30 : 230,826.15 = 87,471.30 : x
  2. Step 2: Convert to fraction form
    153,999.30/230,826.15 = 87,471.30/x
  3. Step 3: Cross multiply
    153,999.30x = 230,826.15 × 87,471.30
  4. Step 4: Simplify right side
    153,999.30x = 20,190,663,414.50
  5. Step 5: Solve for x
    x = 20,190,663,414.50/153,999.30
  6. Step 6: Final answer
    x = 131,108.80

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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.