Home / 120,679,475.70-181,019,213.55-72,306,534.90

Finding the Fourth Proportional to 120,679,475.70, 181,019,213.55 and 72,306,534.90

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Solution

The fourth proportional to 120,679,475.70, 181,019,213.55 and 72,306,534.90 is: 108,459,802.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,679,475.70 : 181,019,213.55 = 72,306,534.90 : x
  2. Step 2: Convert to fraction form
    120,679,475.70/181,019,213.55 = 72,306,534.90/x
  3. Step 3: Cross multiply
    120,679,475.70x = 181,019,213.55 × 72,306,534.90
  4. Step 4: Simplify right side
    120,679,475.70x = 13,088,872,082,123,630
  5. Step 5: Solve for x
    x = 13,088,872,082,123,630/120,679,475.70
  6. Step 6: Final answer
    x = 108,459,802.35

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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.