Home / 156,421.51-215,747.02-102,686.92

Finding the Fourth Proportional to 156,421.51, 215,747.02 and 102,686.92

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Solution

The fourth proportional to 156,421.51, 215,747.02 and 102,686.92 is: 141,632.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,421.51 : 215,747.02 = 102,686.92 : x
  2. Step 2: Convert to fraction form
    156,421.51/215,747.02 = 102,686.92/x
  3. Step 3: Cross multiply
    156,421.51x = 215,747.02 × 102,686.92
  4. Step 4: Simplify right side
    156,421.51x = 22,154,396,571.97
  5. Step 5: Solve for x
    x = 22,154,396,571.97/156,421.51
  6. Step 6: Final answer
    x = 141,632.68

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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.