Home / 205,025.60-307,539.12-99,754.40

Finding the Fourth Proportional to 205,025.60, 307,539.12 and 99,754.40

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Solution

The fourth proportional to 205,025.60, 307,539.12 and 99,754.40 is: 149,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,025.60 : 307,539.12 = 99,754.40 : x
  2. Step 2: Convert to fraction form
    205,025.60/307,539.12 = 99,754.40/x
  3. Step 3: Cross multiply
    205,025.60x = 307,539.12 × 99,754.40
  4. Step 4: Simplify right side
    205,025.60x = 30,678,380,392.13
  5. Step 5: Solve for x
    x = 30,678,380,392.13/205,025.60
  6. Step 6: Final answer
    x = 149,631.95

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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.