Home / 86,988.05-120,101.33-66,808.87

Finding the Fourth Proportional to 86,988.05, 120,101.33 and 66,808.87

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Solution

The fourth proportional to 86,988.05, 120,101.33 and 66,808.87 is: 92,240.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.05 : 120,101.33 = 66,808.87 : x
  2. Step 2: Convert to fraction form
    86,988.05/120,101.33 = 66,808.87/x
  3. Step 3: Cross multiply
    86,988.05x = 120,101.33 × 66,808.87
  4. Step 4: Simplify right side
    86,988.05x = 8,023,834,009.57
  5. Step 5: Solve for x
    x = 8,023,834,009.57/86,988.05
  6. Step 6: Final answer
    x = 92,240.65

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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.