Home / 102,947.64-142,156.38-64,770.83

Finding the Fourth Proportional to 102,947.64, 142,156.38 and 64,770.83

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Solution

The fourth proportional to 102,947.64, 142,156.38 and 64,770.83 is: 89,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,947.64 : 142,156.38 = 64,770.83 : x
  2. Step 2: Convert to fraction form
    102,947.64/142,156.38 = 64,770.83/x
  3. Step 3: Cross multiply
    102,947.64x = 142,156.38 × 64,770.83
  4. Step 4: Simplify right side
    102,947.64x = 9,207,586,722.40
  5. Step 5: Solve for x
    x = 9,207,586,722.40/102,947.64
  6. Step 6: Final answer
    x = 89,439.51

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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.