Home / 156,191.60-215,539.80-88,211.36

Finding the Fourth Proportional to 156,191.60, 215,539.80 and 88,211.36

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Solution

The fourth proportional to 156,191.60, 215,539.80 and 88,211.36 is: 121,729.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,191.60 : 215,539.80 = 88,211.36 : x
  2. Step 2: Convert to fraction form
    156,191.60/215,539.80 = 88,211.36/x
  3. Step 3: Cross multiply
    156,191.60x = 215,539.80 × 88,211.36
  4. Step 4: Simplify right side
    156,191.60x = 19,013,058,892.13
  5. Step 5: Solve for x
    x = 19,013,058,892.13/156,191.60
  6. Step 6: Final answer
    x = 121,729.07

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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.