Home / 145,829.50-201,244.72-78,761.50

Finding the Fourth Proportional to 145,829.50, 201,244.72 and 78,761.50

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Solution

The fourth proportional to 145,829.50, 201,244.72 and 78,761.50 is: 108,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,829.50 : 201,244.72 = 78,761.50 : x
  2. Step 2: Convert to fraction form
    145,829.50/201,244.72 = 78,761.50/x
  3. Step 3: Cross multiply
    145,829.50x = 201,244.72 × 78,761.50
  4. Step 4: Simplify right side
    145,829.50x = 15,850,336,014.28
  5. Step 5: Solve for x
    x = 15,850,336,014.28/145,829.50
  6. Step 6: Final answer
    x = 108,690.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.