Home / 128,270.60-176,998.10-70,902.18

Finding the Fourth Proportional to 128,270.60, 176,998.10 and 70,902.18

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Solution

The fourth proportional to 128,270.60, 176,998.10 and 70,902.18 is: 97,836.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,270.60 : 176,998.10 = 70,902.18 : x
  2. Step 2: Convert to fraction form
    128,270.60/176,998.10 = 70,902.18/x
  3. Step 3: Cross multiply
    128,270.60x = 176,998.10 × 70,902.18
  4. Step 4: Simplify right side
    128,270.60x = 12,549,550,149.92
  5. Step 5: Solve for x
    x = 12,549,550,149.92/128,270.60
  6. Step 6: Final answer
    x = 97,836.53

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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.