Home / 142,920.04-197,241.48-79,278.40

Finding the Fourth Proportional to 142,920.04, 197,241.48 and 79,278.40

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Solution

The fourth proportional to 142,920.04, 197,241.48 and 79,278.40 is: 109,410.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,920.04 : 197,241.48 = 79,278.40 : x
  2. Step 2: Convert to fraction form
    142,920.04/197,241.48 = 79,278.40/x
  3. Step 3: Cross multiply
    142,920.04x = 197,241.48 × 79,278.40
  4. Step 4: Simplify right side
    142,920.04x = 15,636,988,948.03
  5. Step 5: Solve for x
    x = 15,636,988,948.03/142,920.04
  6. Step 6: Final answer
    x = 109,410.75

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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.