Home / 84,501.20-126,751.80-83,626.40

Finding the Fourth Proportional to 84,501.20, 126,751.80 and 83,626.40

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Solution

The fourth proportional to 84,501.20, 126,751.80 and 83,626.40 is: 125,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,501.20 : 126,751.80 = 83,626.40 : x
  2. Step 2: Convert to fraction form
    84,501.20/126,751.80 = 83,626.40/x
  3. Step 3: Cross multiply
    84,501.20x = 126,751.80 × 83,626.40
  4. Step 4: Simplify right side
    84,501.20x = 10,599,796,727.52
  5. Step 5: Solve for x
    x = 10,599,796,727.52/84,501.20
  6. Step 6: Final answer
    x = 125,439.60

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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.