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Finding the Fourth Proportional to 100,526.80, 138,695.88 and 58,069.84

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Solution

The fourth proportional to 100,526.80, 138,695.88 and 58,069.84 is: 80,118.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,526.80 : 138,695.88 = 58,069.84 : x
  2. Step 2: Convert to fraction form
    100,526.80/138,695.88 = 58,069.84/x
  3. Step 3: Cross multiply
    100,526.80x = 138,695.88 × 58,069.84
  4. Step 4: Simplify right side
    100,526.80x = 8,054,047,560.26
  5. Step 5: Solve for x
    x = 8,054,047,560.26/100,526.80
  6. Step 6: Final answer
    x = 80,118.41

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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.