Home / 142,774.59-197,030.31-79,113.75

Finding the Fourth Proportional to 142,774.59, 197,030.31 and 79,113.75

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Solution

The fourth proportional to 142,774.59, 197,030.31 and 79,113.75 is: 109,177.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,774.59 : 197,030.31 = 79,113.75 : x
  2. Step 2: Convert to fraction form
    142,774.59/197,030.31 = 79,113.75/x
  3. Step 3: Cross multiply
    142,774.59x = 197,030.31 × 79,113.75
  4. Step 4: Simplify right side
    142,774.59x = 15,587,806,687.76
  5. Step 5: Solve for x
    x = 15,587,806,687.76/142,774.59
  6. Step 6: Final answer
    x = 109,177.74

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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.