Home / 100,417.11-138,586.55-64,151.93

Finding the Fourth Proportional to 100,417.11, 138,586.55 and 64,151.93

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Solution

The fourth proportional to 100,417.11, 138,586.55 and 64,151.93 is: 88,536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,417.11 : 138,586.55 = 64,151.93 : x
  2. Step 2: Convert to fraction form
    100,417.11/138,586.55 = 64,151.93/x
  3. Step 3: Cross multiply
    100,417.11x = 138,586.55 × 64,151.93
  4. Step 4: Simplify right side
    100,417.11x = 8,890,593,640.85
  5. Step 5: Solve for x
    x = 8,890,593,640.85/100,417.11
  6. Step 6: Final answer
    x = 88,536.64

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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.