Home / 118,442.45-163,337.54-77,545.55

Finding the Fourth Proportional to 118,442.45, 163,337.54 and 77,545.55

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Solution

The fourth proportional to 118,442.45, 163,337.54 and 77,545.55 is: 106,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,442.45 : 163,337.54 = 77,545.55 : x
  2. Step 2: Convert to fraction form
    118,442.45/163,337.54 = 77,545.55/x
  3. Step 3: Cross multiply
    118,442.45x = 163,337.54 × 77,545.55
  4. Step 4: Simplify right side
    118,442.45x = 12,666,099,613.66
  5. Step 5: Solve for x
    x = 12,666,099,613.66/118,442.45
  6. Step 6: Final answer
    x = 106,938.85

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1.5x scale

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.