Home / 90,842.40-136,263.60-71,137.80

Finding the Fourth Proportional to 90,842.40, 136,263.60 and 71,137.80

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Solution

The fourth proportional to 90,842.40, 136,263.60 and 71,137.80 is: 106,706.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,842.40 : 136,263.60 = 71,137.80 : x
  2. Step 2: Convert to fraction form
    90,842.40/136,263.60 = 71,137.80/x
  3. Step 3: Cross multiply
    90,842.40x = 136,263.60 × 71,137.80
  4. Step 4: Simplify right side
    90,842.40x = 9,693,492,724.08
  5. Step 5: Solve for x
    x = 9,693,492,724.08/90,842.40
  6. Step 6: Final answer
    x = 106,706.70

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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.