Home / 100,113.93-138,143.55-59,819.13

Finding the Fourth Proportional to 100,113.93, 138,143.55 and 59,819.13

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Solution

The fourth proportional to 100,113.93, 138,143.55 and 59,819.13 is: 82,542.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,113.93 : 138,143.55 = 59,819.13 : x
  2. Step 2: Convert to fraction form
    100,113.93/138,143.55 = 59,819.13/x
  3. Step 3: Cross multiply
    100,113.93x = 138,143.55 × 59,819.13
  4. Step 4: Simplify right side
    100,113.93x = 8,263,626,976.11
  5. Step 5: Solve for x
    x = 8,263,626,976.11/100,113.93
  6. Step 6: Final answer
    x = 82,542.23

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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.