Home / 97,374.15-145,897.20-80,643.60

Finding the Fourth Proportional to 97,374.15, 145,897.20 and 80,643.60

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Solution

The fourth proportional to 97,374.15, 145,897.20 and 80,643.60 is: 120,829.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,374.15 : 145,897.20 = 80,643.60 : x
  2. Step 2: Convert to fraction form
    97,374.15/145,897.20 = 80,643.60/x
  3. Step 3: Cross multiply
    97,374.15x = 145,897.20 × 80,643.60
  4. Step 4: Simplify right side
    97,374.15x = 11,765,675,437.92
  5. Step 5: Solve for x
    x = 11,765,675,437.92/97,374.15
  6. Step 6: Final answer
    x = 120,829.56

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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.