Home / 134,643.34-201,573.78-78,311.62

Finding the Fourth Proportional to 134,643.34, 201,573.78 and 78,311.62

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Solution

The fourth proportional to 134,643.34, 201,573.78 and 78,311.62 is: 117,239.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,643.34 : 201,573.78 = 78,311.62 : x
  2. Step 2: Convert to fraction form
    134,643.34/201,573.78 = 78,311.62/x
  3. Step 3: Cross multiply
    134,643.34x = 201,573.78 × 78,311.62
  4. Step 4: Simplify right side
    134,643.34x = 15,785,569,261.32
  5. Step 5: Solve for x
    x = 15,785,569,261.32/134,643.34
  6. Step 6: Final answer
    x = 117,239.88

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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.