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Finding the Fourth Proportional to 142,937.39, 197,265.71 and 79,295.69

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Solution

The fourth proportional to 142,937.39, 197,265.71 and 79,295.69 is: 109,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,937.39 : 197,265.71 = 79,295.69 : x
  2. Step 2: Convert to fraction form
    142,937.39/197,265.71 = 79,295.69/x
  3. Step 3: Cross multiply
    142,937.39x = 197,265.71 × 79,295.69
  4. Step 4: Simplify right side
    142,937.39x = 15,642,320,587.79
  5. Step 5: Solve for x
    x = 15,642,320,587.79/142,937.39
  6. Step 6: Final answer
    x = 109,434.77

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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.