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Finding the Fourth Proportional to 188,521.20, 260,281.08 and 124,945.20

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Solution

The fourth proportional to 188,521.20, 260,281.08 and 124,945.20 is: 172,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,521.20 : 260,281.08 = 124,945.20 : x
  2. Step 2: Convert to fraction form
    188,521.20/260,281.08 = 124,945.20/x
  3. Step 3: Cross multiply
    188,521.20x = 260,281.08 × 124,945.20
  4. Step 4: Simplify right side
    188,521.20x = 32,520,871,596.82
  5. Step 5: Solve for x
    x = 32,520,871,596.82/188,521.20
  6. Step 6: Final answer
    x = 172,505.12

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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.