Home / 100,397.24-138,559.10-64,132.06

Finding the Fourth Proportional to 100,397.24, 138,559.10 and 64,132.06

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Solution

The fourth proportional to 100,397.24, 138,559.10 and 64,132.06 is: 88,509.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,397.24 : 138,559.10 = 64,132.06 : x
  2. Step 2: Convert to fraction form
    100,397.24/138,559.10 = 64,132.06/x
  3. Step 3: Cross multiply
    100,397.24x = 138,559.10 × 64,132.06
  4. Step 4: Simplify right side
    100,397.24x = 8,886,080,514.75
  5. Step 5: Solve for x
    x = 8,886,080,514.75/100,397.24
  6. Step 6: Final answer
    x = 88,509.21

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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.