Home / 128,446.20-177,252.94-70,302.65

Finding the Fourth Proportional to 128,446.20, 177,252.94 and 70,302.65

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Solution

The fourth proportional to 128,446.20, 177,252.94 and 70,302.65 is: 97,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,446.20 : 177,252.94 = 70,302.65 : x
  2. Step 2: Convert to fraction form
    128,446.20/177,252.94 = 70,302.65/x
  3. Step 3: Cross multiply
    128,446.20x = 177,252.94 × 70,302.65
  4. Step 4: Simplify right side
    128,446.20x = 12,461,350,340.27
  5. Step 5: Solve for x
    x = 12,461,350,340.27/128,446.20
  6. Step 6: Final answer
    x = 97,016.11

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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.