Home / 138,810.20-191,557.84-75,147.98

Finding the Fourth Proportional to 138,810.20, 191,557.84 and 75,147.98

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Solution

The fourth proportional to 138,810.20, 191,557.84 and 75,147.98 is: 103,704.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,810.20 : 191,557.84 = 75,147.98 : x
  2. Step 2: Convert to fraction form
    138,810.20/191,557.84 = 75,147.98/x
  3. Step 3: Cross multiply
    138,810.20x = 191,557.84 × 75,147.98
  4. Step 4: Simplify right side
    138,810.20x = 14,395,184,353.42
  5. Step 5: Solve for x
    x = 14,395,184,353.42/138,810.20
  6. Step 6: Final answer
    x = 103,704.08

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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.