Home / 107,812.20-161,692.64-47,807.76

Finding the Fourth Proportional to 107,812.20, 161,692.64 and 47,807.76

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Solution

The fourth proportional to 107,812.20, 161,692.64 and 47,807.76 is: 71,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,812.20 : 161,692.64 = 47,807.76 : x
  2. Step 2: Convert to fraction form
    107,812.20/161,692.64 = 47,807.76/x
  3. Step 3: Cross multiply
    107,812.20x = 161,692.64 × 47,807.76
  4. Step 4: Simplify right side
    107,812.20x = 7,730,162,926.89
  5. Step 5: Solve for x
    x = 7,730,162,926.89/107,812.20
  6. Step 6: Final answer
    x = 71,700.26

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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.