Home / 90,528.30-135,792.45-67,200.30

Finding the Fourth Proportional to 90,528.30, 135,792.45 and 67,200.30

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Solution

The fourth proportional to 90,528.30, 135,792.45 and 67,200.30 is: 100,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,528.30 : 135,792.45 = 67,200.30 : x
  2. Step 2: Convert to fraction form
    90,528.30/135,792.45 = 67,200.30/x
  3. Step 3: Cross multiply
    90,528.30x = 135,792.45 × 67,200.30
  4. Step 4: Simplify right side
    90,528.30x = 9,125,293,377.74
  5. Step 5: Solve for x
    x = 9,125,293,377.74/90,528.30
  6. Step 6: Final answer
    x = 100,800.45

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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.