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Finding the Fourth Proportional to 156,987.45, 235,481.18 and 83,259.45

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Solution

The fourth proportional to 156,987.45, 235,481.18 and 83,259.45 is: 124,889.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987.45 : 235,481.18 = 83,259.45 : x
  2. Step 2: Convert to fraction form
    156,987.45/235,481.18 = 83,259.45/x
  3. Step 3: Cross multiply
    156,987.45x = 235,481.18 × 83,259.45
  4. Step 4: Simplify right side
    156,987.45x = 19,606,033,115.85
  5. Step 5: Solve for x
    x = 19,606,033,115.85/156,987.45
  6. Step 6: Final answer
    x = 124,889.18

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1.5x scale

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.