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Finding the Fourth Proportional to 188,686.80, 260,381.52 and 103,803.12

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Solution

The fourth proportional to 188,686.80, 260,381.52 and 103,803.12 is: 143,244.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,686.80 : 260,381.52 = 103,803.12 : x
  2. Step 2: Convert to fraction form
    188,686.80/260,381.52 = 103,803.12/x
  3. Step 3: Cross multiply
    188,686.80x = 260,381.52 × 103,803.12
  4. Step 4: Simplify right side
    188,686.80x = 27,028,414,166.34
  5. Step 5: Solve for x
    x = 27,028,414,166.34/188,686.80
  6. Step 6: Final answer
    x = 143,244.86

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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.