Home / 156,934.90-235,402.35-90,579.70

Finding the Fourth Proportional to 156,934.90, 235,402.35 and 90,579.70

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Solution

The fourth proportional to 156,934.90, 235,402.35 and 90,579.70 is: 135,869.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,934.90 : 235,402.35 = 90,579.70 : x
  2. Step 2: Convert to fraction form
    156,934.90/235,402.35 = 90,579.70/x
  3. Step 3: Cross multiply
    156,934.90x = 235,402.35 × 90,579.70
  4. Step 4: Simplify right side
    156,934.90x = 21,322,674,242.30
  5. Step 5: Solve for x
    x = 21,322,674,242.30/156,934.90
  6. Step 6: Final answer
    x = 135,869.55

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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.