Home / 102,885.30-154,327.95-91,731.60

Finding the Fourth Proportional to 102,885.30, 154,327.95 and 91,731.60

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Solution

The fourth proportional to 102,885.30, 154,327.95 and 91,731.60 is: 137,597.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,885.30 : 154,327.95 = 91,731.60 : x
  2. Step 2: Convert to fraction form
    102,885.30/154,327.95 = 91,731.60/x
  3. Step 3: Cross multiply
    102,885.30x = 154,327.95 × 91,731.60
  4. Step 4: Simplify right side
    102,885.30x = 14,156,749,778.22
  5. Step 5: Solve for x
    x = 14,156,749,778.22/102,885.30
  6. Step 6: Final answer
    x = 137,597.40

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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.