Home / 142,763.49-197,013.51-79,101.14

Finding the Fourth Proportional to 142,763.49, 197,013.51 and 79,101.14

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Solution

The fourth proportional to 142,763.49, 197,013.51 and 79,101.14 is: 109,159.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,763.49 : 197,013.51 = 79,101.14 : x
  2. Step 2: Convert to fraction form
    142,763.49/197,013.51 = 79,101.14/x
  3. Step 3: Cross multiply
    142,763.49x = 197,013.51 × 79,101.14
  4. Step 4: Simplify right side
    142,763.49x = 15,583,992,251.33
  5. Step 5: Solve for x
    x = 15,583,992,251.33/142,763.49
  6. Step 6: Final answer
    x = 109,159.51

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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.