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Finding the Fourth Proportional to 123,870.47, 170,944.41 and 70,154.70

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Solution

The fourth proportional to 123,870.47, 170,944.41 and 70,154.70 is: 96,815.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,870.47 : 170,944.41 = 70,154.70 : x
  2. Step 2: Convert to fraction form
    123,870.47/170,944.41 = 70,154.70/x
  3. Step 3: Cross multiply
    123,870.47x = 170,944.41 × 70,154.70
  4. Step 4: Simplify right side
    123,870.47x = 11,992,553,800.23
  5. Step 5: Solve for x
    x = 11,992,553,800.23/123,870.47
  6. Step 6: Final answer
    x = 96,815.28

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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.