Home / 106,306.32-159,459.20-31,427.36

Finding the Fourth Proportional to 106,306.32, 159,459.20 and 31,427.36

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Solution

The fourth proportional to 106,306.32, 159,459.20 and 31,427.36 is: 47,140.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,306.32 : 159,459.20 = 31,427.36 : x
  2. Step 2: Convert to fraction form
    106,306.32/159,459.20 = 31,427.36/x
  3. Step 3: Cross multiply
    106,306.32x = 159,459.20 × 31,427.36
  4. Step 4: Simplify right side
    106,306.32x = 5,011,381,683.71
  5. Step 5: Solve for x
    x = 5,011,381,683.71/106,306.32
  6. Step 6: Final answer
    x = 47,140.96

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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.