Home / 100,569.13-138,825-60,275.18

Finding the Fourth Proportional to 100,569.13, 138,825 and 60,275.18

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Solution

The fourth proportional to 100,569.13, 138,825 and 60,275.18 is: 83,203.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,569.13 : 138,825 = 60,275.18 : x
  2. Step 2: Convert to fraction form
    100,569.13/138,825 = 60,275.18/x
  3. Step 3: Cross multiply
    100,569.13x = 138,825 × 60,275.18
  4. Step 4: Simplify right side
    100,569.13x = 8,367,701,863.50
  5. Step 5: Solve for x
    x = 8,367,701,863.50/100,569.13
  6. Step 6: Final answer
    x = 83,203.48

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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.