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Finding the Fourth Proportional to 142,125.40, 199,344.20 and 142,125.40

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Solution

The fourth proportional to 142,125.40, 199,344.20 and 142,125.40 is: 199,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,125.40 : 199,344.20 = 142,125.40 : x
  2. Step 2: Convert to fraction form
    142,125.40/199,344.20 = 142,125.40/x
  3. Step 3: Cross multiply
    142,125.40x = 199,344.20 × 142,125.40
  4. Step 4: Simplify right side
    142,125.40x = 28,331,874,162.68
  5. Step 5: Solve for x
    x = 28,331,874,162.68/142,125.40
  6. Step 6: Final answer
    x = 199,344.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.