Home / 113,715.68-170,435.15-80,445.33

Finding the Fourth Proportional to 113,715.68, 170,435.15 and 80,445.33

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Solution

The fourth proportional to 113,715.68, 170,435.15 and 80,445.33 is: 120,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,715.68 : 170,435.15 = 80,445.33 : x
  2. Step 2: Convert to fraction form
    113,715.68/170,435.15 = 80,445.33/x
  3. Step 3: Cross multiply
    113,715.68x = 170,435.15 × 80,445.33
  4. Step 4: Simplify right side
    113,715.68x = 13,710,711,483.12
  5. Step 5: Solve for x
    x = 13,710,711,483.12/113,715.68
  6. Step 6: Final answer
    x = 120,570.11

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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.