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Finding the Fourth Proportional to 112,403.70, 168,109.56 and 100,010.70

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Solution

The fourth proportional to 112,403.70, 168,109.56 and 100,010.70 is: 149,574.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,403.70 : 168,109.56 = 100,010.70 : x
  2. Step 2: Convert to fraction form
    112,403.70/168,109.56 = 100,010.70/x
  3. Step 3: Cross multiply
    112,403.70x = 168,109.56 × 100,010.70
  4. Step 4: Simplify right side
    112,403.70x = 16,812,754,772.29
  5. Step 5: Solve for x
    x = 16,812,754,772.29/112,403.70
  6. Step 6: Final answer
    x = 149,574.75

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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.