Home / 90,802.20-136,205.70-28,474.20

Finding the Fourth Proportional to 90,802.20, 136,205.70 and 28,474.20

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Solution

The fourth proportional to 90,802.20, 136,205.70 and 28,474.20 is: 42,712.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,802.20 : 136,205.70 = 28,474.20 : x
  2. Step 2: Convert to fraction form
    90,802.20/136,205.70 = 28,474.20/x
  3. Step 3: Cross multiply
    90,802.20x = 136,205.70 × 28,474.20
  4. Step 4: Simplify right side
    90,802.20x = 3,878,348,342.94
  5. Step 5: Solve for x
    x = 3,878,348,342.94/90,802.20
  6. Step 6: Final answer
    x = 42,712.05

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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.