Home / 100,370.07-138,513.24-56,759.13

Finding the Fourth Proportional to 100,370.07, 138,513.24 and 56,759.13

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Solution

The fourth proportional to 100,370.07, 138,513.24 and 56,759.13 is: 78,329.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,370.07 : 138,513.24 = 56,759.13 : x
  2. Step 2: Convert to fraction form
    100,370.07/138,513.24 = 56,759.13/x
  3. Step 3: Cross multiply
    100,370.07x = 138,513.24 × 56,759.13
  4. Step 4: Simplify right side
    100,370.07x = 7,861,890,995.88
  5. Step 5: Solve for x
    x = 7,861,890,995.88/100,370.07
  6. Step 6: Final answer
    x = 78,329.04

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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.