Home / 137,658.11-189,957.02-77,220.36

Finding the Fourth Proportional to 137,658.11, 189,957.02 and 77,220.36

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Solution

The fourth proportional to 137,658.11, 189,957.02 and 77,220.36 is: 106,557.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,658.11 : 189,957.02 = 77,220.36 : x
  2. Step 2: Convert to fraction form
    137,658.11/189,957.02 = 77,220.36/x
  3. Step 3: Cross multiply
    137,658.11x = 189,957.02 × 77,220.36
  4. Step 4: Simplify right side
    137,658.11x = 14,668,549,082.83
  5. Step 5: Solve for x
    x = 14,668,549,082.83/137,658.11
  6. Step 6: Final answer
    x = 106,557.83

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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.