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Finding the Fourth Proportional to 100,510.14, 150,787.07 and 30,387.63

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Solution

The fourth proportional to 100,510.14, 150,787.07 and 30,387.63 is: 45,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,510.14 : 150,787.07 = 30,387.63 : x
  2. Step 2: Convert to fraction form
    100,510.14/150,787.07 = 30,387.63/x
  3. Step 3: Cross multiply
    100,510.14x = 150,787.07 × 30,387.63
  4. Step 4: Simplify right side
    100,510.14x = 4,582,061,691.94
  5. Step 5: Solve for x
    x = 4,582,061,691.94/100,510.14
  6. Step 6: Final answer
    x = 45,588.05

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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.