Home / 128,152.72-192,256.08-48,191.20

Finding the Fourth Proportional to 128,152.72, 192,256.08 and 48,191.20

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Solution

The fourth proportional to 128,152.72, 192,256.08 and 48,191.20 is: 72,296.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,152.72 : 192,256.08 = 48,191.20 : x
  2. Step 2: Convert to fraction form
    128,152.72/192,256.08 = 48,191.20/x
  3. Step 3: Cross multiply
    128,152.72x = 192,256.08 × 48,191.20
  4. Step 4: Simplify right side
    128,152.72x = 9,265,051,202.50
  5. Step 5: Solve for x
    x = 9,265,051,202.50/128,152.72
  6. Step 6: Final answer
    x = 72,296.95

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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.