Home / 100,957.38-139,315.56-60,663.66

Finding the Fourth Proportional to 100,957.38, 139,315.56 and 60,663.66

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Solution

The fourth proportional to 100,957.38, 139,315.56 and 60,663.66 is: 83,712.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,957.38 : 139,315.56 = 60,663.66 : x
  2. Step 2: Convert to fraction form
    100,957.38/139,315.56 = 60,663.66/x
  3. Step 3: Cross multiply
    100,957.38x = 139,315.56 × 60,663.66
  4. Step 4: Simplify right side
    100,957.38x = 8,451,391,764.55
  5. Step 5: Solve for x
    x = 8,451,391,764.55/100,957.38
  6. Step 6: Final answer
    x = 83,712.47

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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.