Home / 102,684.20-154,026.30-90,631.40

Finding the Fourth Proportional to 102,684.20, 154,026.30 and 90,631.40

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Solution

The fourth proportional to 102,684.20, 154,026.30 and 90,631.40 is: 135,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,684.20 : 154,026.30 = 90,631.40 : x
  2. Step 2: Convert to fraction form
    102,684.20/154,026.30 = 90,631.40/x
  3. Step 3: Cross multiply
    102,684.20x = 154,026.30 × 90,631.40
  4. Step 4: Simplify right side
    102,684.20x = 13,959,619,205.82
  5. Step 5: Solve for x
    x = 13,959,619,205.82/102,684.20
  6. Step 6: Final answer
    x = 135,947.10

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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.