Home / 123,530.47-170,472.27-66,941.85

Finding the Fourth Proportional to 123,530.47, 170,472.27 and 66,941.85

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Solution

The fourth proportional to 123,530.47, 170,472.27 and 66,941.85 is: 92,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,530.47 : 170,472.27 = 66,941.85 : x
  2. Step 2: Convert to fraction form
    123,530.47/170,472.27 = 66,941.85/x
  3. Step 3: Cross multiply
    123,530.47x = 170,472.27 × 66,941.85
  4. Step 4: Simplify right side
    123,530.47x = 11,411,729,127.50
  5. Step 5: Solve for x
    x = 11,411,729,127.50/123,530.47
  6. Step 6: Final answer
    x = 92,379.87

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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.