Home / 124,711.30-172,158.20-79,451.34

Finding the Fourth Proportional to 124,711.30, 172,158.20 and 79,451.34

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Solution

The fourth proportional to 124,711.30, 172,158.20 and 79,451.34 is: 109,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,711.30 : 172,158.20 = 79,451.34 : x
  2. Step 2: Convert to fraction form
    124,711.30/172,158.20 = 79,451.34/x
  3. Step 3: Cross multiply
    124,711.30x = 172,158.20 × 79,451.34
  4. Step 4: Simplify right side
    124,711.30x = 13,678,199,681.99
  5. Step 5: Solve for x
    x = 13,678,199,681.99/124,711.30
  6. Step 6: Final answer
    x = 109,678.91

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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.