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Finding the Fourth Proportional to 142,998.48, 197,329.32 and 79,332.48

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Solution

The fourth proportional to 142,998.48, 197,329.32 and 79,332.48 is: 109,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,998.48 : 197,329.32 = 79,332.48 : x
  2. Step 2: Convert to fraction form
    142,998.48/197,329.32 = 79,332.48/x
  3. Step 3: Cross multiply
    142,998.48x = 197,329.32 × 79,332.48
  4. Step 4: Simplify right side
    142,998.48x = 15,654,624,332.31
  5. Step 5: Solve for x
    x = 15,654,624,332.31/142,998.48
  6. Step 6: Final answer
    x = 109,474.06

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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.