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Finding the Fourth Proportional to 114,920.80, 172,381.20 and 75,522.40

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Solution

The fourth proportional to 114,920.80, 172,381.20 and 75,522.40 is: 113,283.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,920.80 : 172,381.20 = 75,522.40 : x
  2. Step 2: Convert to fraction form
    114,920.80/172,381.20 = 75,522.40/x
  3. Step 3: Cross multiply
    114,920.80x = 172,381.20 × 75,522.40
  4. Step 4: Simplify right side
    114,920.80x = 13,018,641,938.88
  5. Step 5: Solve for x
    x = 13,018,641,938.88/114,920.80
  6. Step 6: Final answer
    x = 113,283.60

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1.5x scale

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.