Home / 134,591.10-201,643.65-78,385.20

Finding the Fourth Proportional to 134,591.10, 201,643.65 and 78,385.20

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Solution

The fourth proportional to 134,591.10, 201,643.65 and 78,385.20 is: 117,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,591.10 : 201,643.65 = 78,385.20 : x
  2. Step 2: Convert to fraction form
    134,591.10/201,643.65 = 78,385.20/x
  3. Step 3: Cross multiply
    134,591.10x = 201,643.65 × 78,385.20
  4. Step 4: Simplify right side
    134,591.10x = 15,805,877,833.98
  5. Step 5: Solve for x
    x = 15,805,877,833.98/134,591.10
  6. Step 6: Final answer
    x = 117,436.28

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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.