Home / 128,113.48-192,150.52-42,725.84

Finding the Fourth Proportional to 128,113.48, 192,150.52 and 42,725.84

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Solution

The fourth proportional to 128,113.48, 192,150.52 and 42,725.84 is: 64,082.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,113.48 : 192,150.52 = 42,725.84 : x
  2. Step 2: Convert to fraction form
    128,113.48/192,150.52 = 42,725.84/x
  3. Step 3: Cross multiply
    128,113.48x = 192,150.52 × 42,725.84
  4. Step 4: Simplify right side
    128,113.48x = 8,209,791,305.87
  5. Step 5: Solve for x
    x = 8,209,791,305.87/128,113.48
  6. Step 6: Final answer
    x = 64,082.18

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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.