Home / 102,039.40-153,069.18-31,920.04

Finding the Fourth Proportional to 102,039.40, 153,069.18 and 31,920.04

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Solution

The fourth proportional to 102,039.40, 153,069.18 and 31,920.04 is: 47,883.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,039.40 : 153,069.18 = 31,920.04 : x
  2. Step 2: Convert to fraction form
    102,039.40/153,069.18 = 31,920.04/x
  3. Step 3: Cross multiply
    102,039.40x = 153,069.18 × 31,920.04
  4. Step 4: Simplify right side
    102,039.40x = 4,885,974,348.37
  5. Step 5: Solve for x
    x = 4,885,974,348.37/102,039.40
  6. Step 6: Final answer
    x = 47,883.21

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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.