Home / 152,938.65-229,172.19-81,870.72

Finding the Fourth Proportional to 152,938.65, 229,172.19 and 81,870.72

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Solution

The fourth proportional to 152,938.65, 229,172.19 and 81,870.72 is: 122,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,938.65 : 229,172.19 = 81,870.72 : x
  2. Step 2: Convert to fraction form
    152,938.65/229,172.19 = 81,870.72/x
  3. Step 3: Cross multiply
    152,938.65x = 229,172.19 × 81,870.72
  4. Step 4: Simplify right side
    152,938.65x = 18,762,491,032.87
  5. Step 5: Solve for x
    x = 18,762,491,032.87/152,938.65
  6. Step 6: Final answer
    x = 122,679.85

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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.