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Finding the Fourth Proportional to 97,400.80, 146,101.20 and 86,247.10

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Solution

The fourth proportional to 97,400.80, 146,101.20 and 86,247.10 is: 129,370.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,400.80 : 146,101.20 = 86,247.10 : x
  2. Step 2: Convert to fraction form
    97,400.80/146,101.20 = 86,247.10/x
  3. Step 3: Cross multiply
    97,400.80x = 146,101.20 × 86,247.10
  4. Step 4: Simplify right side
    97,400.80x = 12,600,804,806.52
  5. Step 5: Solve for x
    x = 12,600,804,806.52/97,400.80
  6. Step 6: Final answer
    x = 129,370.65

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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.