Home / 120,487.47-180,534.00-72,958.59

Finding the Fourth Proportional to 120,487.47, 180,534.00 and 72,958.59

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Solution

The fourth proportional to 120,487.47, 180,534.00 and 72,958.59 is: 109,318.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,487.47 : 180,534.00 = 72,958.59 : x
  2. Step 2: Convert to fraction form
    120,487.47/180,534.00 = 72,958.59/x
  3. Step 3: Cross multiply
    120,487.47x = 180,534.00 × 72,958.59
  4. Step 4: Simplify right side
    120,487.47x = 13,171,506,360.65
  5. Step 5: Solve for x
    x = 13,171,506,360.65/120,487.47
  6. Step 6: Final answer
    x = 109,318.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.