Home / 125,056.20-172,561.14-76,679.76

Finding the Fourth Proportional to 125,056.20, 172,561.14 and 76,679.76

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Solution

The fourth proportional to 125,056.20, 172,561.14 and 76,679.76 is: 105,808.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,056.20 : 172,561.14 = 76,679.76 : x
  2. Step 2: Convert to fraction form
    125,056.20/172,561.14 = 76,679.76/x
  3. Step 3: Cross multiply
    125,056.20x = 172,561.14 × 76,679.76
  4. Step 4: Simplify right side
    125,056.20x = 13,231,946,800.53
  5. Step 5: Solve for x
    x = 13,231,946,800.53/125,056.20
  6. Step 6: Final answer
    x = 105,808.00

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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.