Home / 90,690.30-136,035.45-67,070.70

Finding the Fourth Proportional to 90,690.30, 136,035.45 and 67,070.70

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Solution

The fourth proportional to 90,690.30, 136,035.45 and 67,070.70 is: 100,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690.30 : 136,035.45 = 67,070.70 : x
  2. Step 2: Convert to fraction form
    90,690.30/136,035.45 = 67,070.70/x
  3. Step 3: Cross multiply
    90,690.30x = 136,035.45 × 67,070.70
  4. Step 4: Simplify right side
    90,690.30x = 9,123,992,856.32
  5. Step 5: Solve for x
    x = 9,123,992,856.32/90,690.30
  6. Step 6: Final answer
    x = 100,606.05

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1.5x scale

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.