Home / 101,633.12-140,521.28-89,021.76

Finding the Fourth Proportional to 101,633.12, 140,521.28 and 89,021.76

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Solution

The fourth proportional to 101,633.12, 140,521.28 and 89,021.76 is: 123,084.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,633.12 : 140,521.28 = 89,021.76 : x
  2. Step 2: Convert to fraction form
    101,633.12/140,521.28 = 89,021.76/x
  3. Step 3: Cross multiply
    101,633.12x = 140,521.28 × 89,021.76
  4. Step 4: Simplify right side
    101,633.12x = 12,509,451,663.05
  5. Step 5: Solve for x
    x = 12,509,451,663.05/101,633.12
  6. Step 6: Final answer
    x = 123,084.40

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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.