Home / 187,645.57-281,426.14-86,346.45

Finding the Fourth Proportional to 187,645.57, 281,426.14 and 86,346.45

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Solution

The fourth proportional to 187,645.57, 281,426.14 and 86,346.45 is: 129,500.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,645.57 : 281,426.14 = 86,346.45 : x
  2. Step 2: Convert to fraction form
    187,645.57/281,426.14 = 86,346.45/x
  3. Step 3: Cross multiply
    187,645.57x = 281,426.14 × 86,346.45
  4. Step 4: Simplify right side
    187,645.57x = 24,300,148,126.20
  5. Step 5: Solve for x
    x = 24,300,148,126.20/187,645.57
  6. Step 6: Final answer
    x = 129,500.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.