Home / 113,486.20-170,229.30-89,985.40

Finding the Fourth Proportional to 113,486.20, 170,229.30 and 89,985.40

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Solution

The fourth proportional to 113,486.20, 170,229.30 and 89,985.40 is: 134,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,486.20 : 170,229.30 = 89,985.40 : x
  2. Step 2: Convert to fraction form
    113,486.20/170,229.30 = 89,985.40/x
  3. Step 3: Cross multiply
    113,486.20x = 170,229.30 × 89,985.40
  4. Step 4: Simplify right side
    113,486.20x = 15,318,151,652.22
  5. Step 5: Solve for x
    x = 15,318,151,652.22/113,486.20
  6. Step 6: Final answer
    x = 134,978.10

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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.