Home / 143,779,448.01-215,449,692.90-85,372,105.61

Finding the Fourth Proportional to 143,779,448.01, 215,449,692.90 and 85,372,105.61

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Solution

The fourth proportional to 143,779,448.01, 215,449,692.90 and 85,372,105.61 is: 127,927,838.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,779,448.01 : 215,449,692.90 = 85,372,105.61 : x
  2. Step 2: Convert to fraction form
    143,779,448.01/215,449,692.90 = 85,372,105.61/x
  3. Step 3: Cross multiply
    143,779,448.01x = 215,449,692.90 × 85,372,105.61
  4. Step 4: Simplify right side
    143,779,448.01x = 18,393,393,935,900,868
  5. Step 5: Solve for x
    x = 18,393,393,935,900,868/143,779,448.01
  6. Step 6: Final answer
    x = 127,927,838.02

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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.