Home / 128,314.46-177,080.10-70,952.78

Finding the Fourth Proportional to 128,314.46, 177,080.10 and 70,952.78

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Solution

The fourth proportional to 128,314.46, 177,080.10 and 70,952.78 is: 97,918.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,314.46 : 177,080.10 = 70,952.78 : x
  2. Step 2: Convert to fraction form
    128,314.46/177,080.10 = 70,952.78/x
  3. Step 3: Cross multiply
    128,314.46x = 177,080.10 × 70,952.78
  4. Step 4: Simplify right side
    128,314.46x = 12,564,325,377.68
  5. Step 5: Solve for x
    x = 12,564,325,377.68/128,314.46
  6. Step 6: Final answer
    x = 97,918.23

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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.