Home / 126,037.20-189,055.80-66,842.40

Finding the Fourth Proportional to 126,037.20, 189,055.80 and 66,842.40

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Solution

The fourth proportional to 126,037.20, 189,055.80 and 66,842.40 is: 100,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,037.20 : 189,055.80 = 66,842.40 : x
  2. Step 2: Convert to fraction form
    126,037.20/189,055.80 = 66,842.40/x
  3. Step 3: Cross multiply
    126,037.20x = 189,055.80 × 66,842.40
  4. Step 4: Simplify right side
    126,037.20x = 12,636,943,405.92
  5. Step 5: Solve for x
    x = 12,636,943,405.92/126,037.20
  6. Step 6: Final answer
    x = 100,263.60

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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.