Home / 120,220.47-180,372.15-53,706.51

Finding the Fourth Proportional to 120,220.47, 180,372.15 and 53,706.51

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Solution

The fourth proportional to 120,220.47, 180,372.15 and 53,706.51 is: 80,578.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,220.47 : 180,372.15 = 53,706.51 : x
  2. Step 2: Convert to fraction form
    120,220.47/180,372.15 = 53,706.51/x
  3. Step 3: Cross multiply
    120,220.47x = 180,372.15 × 53,706.51
  4. Step 4: Simplify right side
    120,220.47x = 9,687,158,677.70
  5. Step 5: Solve for x
    x = 9,687,158,677.70/120,220.47
  6. Step 6: Final answer
    x = 80,578.28

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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.