Home / 128,248.31-176,977.19-70,884.70

Finding the Fourth Proportional to 128,248.31, 176,977.19 and 70,884.70

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Solution

The fourth proportional to 128,248.31, 176,977.19 and 70,884.70 is: 97,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,248.31 : 176,977.19 = 70,884.70 : x
  2. Step 2: Convert to fraction form
    128,248.31/176,977.19 = 70,884.70/x
  3. Step 3: Cross multiply
    128,248.31x = 176,977.19 × 70,884.70
  4. Step 4: Simplify right side
    128,248.31x = 12,544,973,780.68
  5. Step 5: Solve for x
    x = 12,544,973,780.68/128,248.31
  6. Step 6: Final answer
    x = 97,817.85

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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.