Home / 128,443.16-177,247.17-71,084.90

Finding the Fourth Proportional to 128,443.16, 177,247.17 and 71,084.90

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Solution

The fourth proportional to 128,443.16, 177,247.17 and 71,084.90 is: 98,094.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,443.16 : 177,247.17 = 71,084.90 : x
  2. Step 2: Convert to fraction form
    128,443.16/177,247.17 = 71,084.90/x
  3. Step 3: Cross multiply
    128,443.16x = 177,247.17 × 71,084.90
  4. Step 4: Simplify right side
    128,443.16x = 12,599,596,468.50
  5. Step 5: Solve for x
    x = 12,599,596,468.50/128,443.16
  6. Step 6: Final answer
    x = 98,094.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.