Home / 156,299.40-215,680.32-88,322.28

Finding the Fourth Proportional to 156,299.40, 215,680.32 and 88,322.28

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Solution

The fourth proportional to 156,299.40, 215,680.32 and 88,322.28 is: 121,877.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,299.40 : 215,680.32 = 88,322.28 : x
  2. Step 2: Convert to fraction form
    156,299.40/215,680.32 = 88,322.28/x
  3. Step 3: Cross multiply
    156,299.40x = 215,680.32 × 88,322.28
  4. Step 4: Simplify right side
    156,299.40x = 19,049,377,613.53
  5. Step 5: Solve for x
    x = 19,049,377,613.53/156,299.40
  6. Step 6: Final answer
    x = 121,877.48

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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.