Home / 125,130.61-187,723.60-68,941.78

Finding the Fourth Proportional to 125,130.61, 187,723.60 and 68,941.78

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Solution

The fourth proportional to 125,130.61, 187,723.60 and 68,941.78 is: 103,427.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,130.61 : 187,723.60 = 68,941.78 : x
  2. Step 2: Convert to fraction form
    125,130.61/187,723.60 = 68,941.78/x
  3. Step 3: Cross multiply
    125,130.61x = 187,723.60 × 68,941.78
  4. Step 4: Simplify right side
    125,130.61x = 12,941,999,132.01
  5. Step 5: Solve for x
    x = 12,941,999,132.01/125,130.61
  6. Step 6: Final answer
    x = 103,427.92

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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.