Home / 122,039.20-182,702.40-87,047.20

Finding the Fourth Proportional to 122,039.20, 182,702.40 and 87,047.20

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Solution

The fourth proportional to 122,039.20, 182,702.40 and 87,047.20 is: 130,316.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,039.20 : 182,702.40 = 87,047.20 : x
  2. Step 2: Convert to fraction form
    122,039.20/182,702.40 = 87,047.20/x
  3. Step 3: Cross multiply
    122,039.20x = 182,702.40 × 87,047.20
  4. Step 4: Simplify right side
    122,039.20x = 15,903,732,353.28
  5. Step 5: Solve for x
    x = 15,903,732,353.28/122,039.20
  6. Step 6: Final answer
    x = 130,316.59

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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.