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Finding the Fourth Proportional to 187,388.46, 281,064.47 and 103,120.92

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Solution

The fourth proportional to 187,388.46, 281,064.47 and 103,120.92 is: 154,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,388.46 : 281,064.47 = 103,120.92 : x
  2. Step 2: Convert to fraction form
    187,388.46/281,064.47 = 103,120.92/x
  3. Step 3: Cross multiply
    187,388.46x = 281,064.47 × 103,120.92
  4. Step 4: Simplify right side
    187,388.46x = 28,983,626,210.11
  5. Step 5: Solve for x
    x = 28,983,626,210.11/187,388.46
  6. Step 6: Final answer
    x = 154,671.35

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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.