Home / 103,400.10-155,100.15-28,531.80

Finding the Fourth Proportional to 103,400.10, 155,100.15 and 28,531.80

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Solution

The fourth proportional to 103,400.10, 155,100.15 and 28,531.80 is: 42,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,400.10 : 155,100.15 = 28,531.80 : x
  2. Step 2: Convert to fraction form
    103,400.10/155,100.15 = 28,531.80/x
  3. Step 3: Cross multiply
    103,400.10x = 155,100.15 × 28,531.80
  4. Step 4: Simplify right side
    103,400.10x = 4,425,286,459.77
  5. Step 5: Solve for x
    x = 4,425,286,459.77/103,400.10
  6. Step 6: Final answer
    x = 42,797.70

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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.