Home / 142,123.20-212,925.60-115,684.80

Finding the Fourth Proportional to 142,123.20, 212,925.60 and 115,684.80

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Solution

The fourth proportional to 142,123.20, 212,925.60 and 115,684.80 is: 173,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,123.20 : 212,925.60 = 115,684.80 : x
  2. Step 2: Convert to fraction form
    142,123.20/212,925.60 = 115,684.80/x
  3. Step 3: Cross multiply
    142,123.20x = 212,925.60 × 115,684.80
  4. Step 4: Simplify right side
    142,123.20x = 24,632,255,450.88
  5. Step 5: Solve for x
    x = 24,632,255,450.88/142,123.20
  6. Step 6: Final answer
    x = 173,316.22

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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.