Home / 156,264.81-215,632.66-88,287.69

Finding the Fourth Proportional to 156,264.81, 215,632.66 and 88,287.69

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Solution

The fourth proportional to 156,264.81, 215,632.66 and 88,287.69 is: 121,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,264.81 : 215,632.66 = 88,287.69 : x
  2. Step 2: Convert to fraction form
    156,264.81/215,632.66 = 88,287.69/x
  3. Step 3: Cross multiply
    156,264.81x = 215,632.66 × 88,287.69
  4. Step 4: Simplify right side
    156,264.81x = 19,037,708,998.52
  5. Step 5: Solve for x
    x = 19,037,708,998.52/156,264.81
  6. Step 6: Final answer
    x = 121,829.79

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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.