Home / 156,321.39-215,731.98-88,341.21

Finding the Fourth Proportional to 156,321.39, 215,731.98 and 88,341.21

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Solution

The fourth proportional to 156,321.39, 215,731.98 and 88,341.21 is: 121,915.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,321.39 : 215,731.98 = 88,341.21 : x
  2. Step 2: Convert to fraction form
    156,321.39/215,731.98 = 88,341.21/x
  3. Step 3: Cross multiply
    156,321.39x = 215,731.98 × 88,341.21
  4. Step 4: Simplify right side
    156,321.39x = 19,058,024,148.90
  5. Step 5: Solve for x
    x = 19,058,024,148.90/156,321.39
  6. Step 6: Final answer
    x = 121,915.65

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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.