Home / 100,451.55-138,643.65-58,004.31

Finding the Fourth Proportional to 100,451.55, 138,643.65 and 58,004.31

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Solution

The fourth proportional to 100,451.55, 138,643.65 and 58,004.31 is: 80,057.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,451.55 : 138,643.65 = 58,004.31 : x
  2. Step 2: Convert to fraction form
    100,451.55/138,643.65 = 58,004.31/x
  3. Step 3: Cross multiply
    100,451.55x = 138,643.65 × 58,004.31
  4. Step 4: Simplify right side
    100,451.55x = 8,041,929,254.13
  5. Step 5: Solve for x
    x = 8,041,929,254.13/100,451.55
  6. Step 6: Final answer
    x = 80,057.79

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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.