Home / 92,778.78-139,193.28-66,158.40

Finding the Fourth Proportional to 92,778.78, 139,193.28 and 66,158.40

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Solution

The fourth proportional to 92,778.78, 139,193.28 and 66,158.40 is: 99,255.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,778.78 : 139,193.28 = 66,158.40 : x
  2. Step 2: Convert to fraction form
    92,778.78/139,193.28 = 66,158.40/x
  3. Step 3: Cross multiply
    92,778.78x = 139,193.28 × 66,158.40
  4. Step 4: Simplify right side
    92,778.78x = 9,208,804,695.55
  5. Step 5: Solve for x
    x = 9,208,804,695.55/92,778.78
  6. Step 6: Final answer
    x = 99,255.51

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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.