Home / 115,269.28-172,981.70-45,139.84

Finding the Fourth Proportional to 115,269.28, 172,981.70 and 45,139.84

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Solution

The fourth proportional to 115,269.28, 172,981.70 and 45,139.84 is: 67,740.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,269.28 : 172,981.70 = 45,139.84 : x
  2. Step 2: Convert to fraction form
    115,269.28/172,981.70 = 45,139.84/x
  3. Step 3: Cross multiply
    115,269.28x = 172,981.70 × 45,139.84
  4. Step 4: Simplify right side
    115,269.28x = 7,808,366,260.93
  5. Step 5: Solve for x
    x = 7,808,366,260.93/115,269.28
  6. Step 6: Final answer
    x = 67,740.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.