Home / 120,865.60-181,298.40-108,618.40

Finding the Fourth Proportional to 120,865.60, 181,298.40 and 108,618.40

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Solution

The fourth proportional to 120,865.60, 181,298.40 and 108,618.40 is: 162,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,865.60 : 181,298.40 = 108,618.40 : x
  2. Step 2: Convert to fraction form
    120,865.60/181,298.40 = 108,618.40/x
  3. Step 3: Cross multiply
    120,865.60x = 181,298.40 × 108,618.40
  4. Step 4: Simplify right side
    120,865.60x = 19,692,342,130.56
  5. Step 5: Solve for x
    x = 19,692,342,130.56/120,865.60
  6. Step 6: Final answer
    x = 162,927.60

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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.