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Finding the Fourth Proportional to 115,172.62, 172,798.31 and 70,283.97

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Solution

The fourth proportional to 115,172.62, 172,798.31 and 70,283.97 is: 105,449.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,172.62 : 172,798.31 = 70,283.97 : x
  2. Step 2: Convert to fraction form
    115,172.62/172,798.31 = 70,283.97/x
  3. Step 3: Cross multiply
    115,172.62x = 172,798.31 × 70,283.97
  4. Step 4: Simplify right side
    115,172.62x = 12,144,951,411.80
  5. Step 5: Solve for x
    x = 12,144,951,411.80/115,172.62
  6. Step 6: Final answer
    x = 105,449.99

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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.