Home / 155,933.40-215,179.24-87,946.30

Finding the Fourth Proportional to 155,933.40, 215,179.24 and 87,946.30

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Solution

The fourth proportional to 155,933.40, 215,179.24 and 87,946.30 is: 121,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,933.40 : 215,179.24 = 87,946.30 : x
  2. Step 2: Convert to fraction form
    155,933.40/215,179.24 = 87,946.30/x
  3. Step 3: Cross multiply
    155,933.40x = 215,179.24 × 87,946.30
  4. Step 4: Simplify right side
    155,933.40x = 18,924,217,994.81
  5. Step 5: Solve for x
    x = 18,924,217,994.81/155,933.40
  6. Step 6: Final answer
    x = 121,360.90

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1.5x scale

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.