Home / 149,281.87-206,009.16-81,298.96

Finding the Fourth Proportional to 149,281.87, 206,009.16 and 81,298.96

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Solution

The fourth proportional to 149,281.87, 206,009.16 and 81,298.96 is: 112,192.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,281.87 : 206,009.16 = 81,298.96 : x
  2. Step 2: Convert to fraction form
    149,281.87/206,009.16 = 81,298.96/x
  3. Step 3: Cross multiply
    149,281.87x = 206,009.16 × 81,298.96
  4. Step 4: Simplify right side
    149,281.87x = 16,748,330,458.47
  5. Step 5: Solve for x
    x = 16,748,330,458.47/149,281.87
  6. Step 6: Final answer
    x = 112,192.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.