Home / 100,018.08-138,057.88-57,587.04

Finding the Fourth Proportional to 100,018.08, 138,057.88 and 57,587.04

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Solution

The fourth proportional to 100,018.08, 138,057.88 and 57,587.04 is: 79,489.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,018.08 : 138,057.88 = 57,587.04 : x
  2. Step 2: Convert to fraction form
    100,018.08/138,057.88 = 57,587.04/x
  3. Step 3: Cross multiply
    100,018.08x = 138,057.88 × 57,587.04
  4. Step 4: Simplify right side
    100,018.08x = 7,950,344,657.88
  5. Step 5: Solve for x
    x = 7,950,344,657.88/100,018.08
  6. Step 6: Final answer
    x = 79,489.07

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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.