Home / 128,079.40-192,152.70-49,196.20

Finding the Fourth Proportional to 128,079.40, 192,152.70 and 49,196.20

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Solution

The fourth proportional to 128,079.40, 192,152.70 and 49,196.20 is: 73,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,079.40 : 192,152.70 = 49,196.20 : x
  2. Step 2: Convert to fraction form
    128,079.40/192,152.70 = 49,196.20/x
  3. Step 3: Cross multiply
    128,079.40x = 192,152.70 × 49,196.20
  4. Step 4: Simplify right side
    128,079.40x = 9,453,182,659.74
  5. Step 5: Solve for x
    x = 9,453,182,659.74/128,079.40
  6. Step 6: Final answer
    x = 73,807.21

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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.