Home / 129,870.40-194,805.60-103,298.35

Finding the Fourth Proportional to 129,870.40, 194,805.60 and 103,298.35

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Solution

The fourth proportional to 129,870.40, 194,805.60 and 103,298.35 is: 154,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,870.40 : 194,805.60 = 103,298.35 : x
  2. Step 2: Convert to fraction form
    129,870.40/194,805.60 = 103,298.35/x
  3. Step 3: Cross multiply
    129,870.40x = 194,805.60 × 103,298.35
  4. Step 4: Simplify right side
    129,870.40x = 20,123,097,050.76
  5. Step 5: Solve for x
    x = 20,123,097,050.76/129,870.40
  6. Step 6: Final answer
    x = 154,947.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.