Home / 109,295.20-163,942.80-99,618.40

Finding the Fourth Proportional to 109,295.20, 163,942.80 and 99,618.40

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Solution

The fourth proportional to 109,295.20, 163,942.80 and 99,618.40 is: 149,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,295.20 : 163,942.80 = 99,618.40 : x
  2. Step 2: Convert to fraction form
    109,295.20/163,942.80 = 99,618.40/x
  3. Step 3: Cross multiply
    109,295.20x = 163,942.80 × 99,618.40
  4. Step 4: Simplify right side
    109,295.20x = 16,331,719,427.52
  5. Step 5: Solve for x
    x = 16,331,719,427.52/109,295.20
  6. Step 6: Final answer
    x = 149,427.60

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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.