Home / 100,373.07-138,517.38-56,762.13

Finding the Fourth Proportional to 100,373.07, 138,517.38 and 56,762.13

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Solution

The fourth proportional to 100,373.07, 138,517.38 and 56,762.13 is: 78,333.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,373.07 : 138,517.38 = 56,762.13 : x
  2. Step 2: Convert to fraction form
    100,373.07/138,517.38 = 56,762.13/x
  3. Step 3: Cross multiply
    100,373.07x = 138,517.38 × 56,762.13
  4. Step 4: Simplify right side
    100,373.07x = 7,862,541,530.82
  5. Step 5: Solve for x
    x = 7,862,541,530.82/100,373.07
  6. Step 6: Final answer
    x = 78,333.18

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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.