Home / 142,748.20-196,994.10-79,087

Finding the Fourth Proportional to 142,748.20, 196,994.10 and 79,087

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Solution

The fourth proportional to 142,748.20, 196,994.10 and 79,087 is: 109,140.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,748.20 : 196,994.10 = 79,087 : x
  2. Step 2: Convert to fraction form
    142,748.20/196,994.10 = 79,087/x
  3. Step 3: Cross multiply
    142,748.20x = 196,994.10 × 79,087
  4. Step 4: Simplify right side
    142,748.20x = 15,579,672,386.70
  5. Step 5: Solve for x
    x = 15,579,672,386.70/142,748.20
  6. Step 6: Final answer
    x = 109,140.94

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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.