Home / 102,731.20-153,999.60-60,643.60

Finding the Fourth Proportional to 102,731.20, 153,999.60 and 60,643.60

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Solution

The fourth proportional to 102,731.20, 153,999.60 and 60,643.60 is: 90,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,731.20 : 153,999.60 = 60,643.60 : x
  2. Step 2: Convert to fraction form
    102,731.20/153,999.60 = 60,643.60/x
  3. Step 3: Cross multiply
    102,731.20x = 153,999.60 × 60,643.60
  4. Step 4: Simplify right side
    102,731.20x = 9,339,090,142.56
  5. Step 5: Solve for x
    x = 9,339,090,142.56/102,731.20
  6. Step 6: Final answer
    x = 90,908.02

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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.