Home / 126,501.60-189,752.40-121,252.80

Finding the Fourth Proportional to 126,501.60, 189,752.40 and 121,252.80

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Solution

The fourth proportional to 126,501.60, 189,752.40 and 121,252.80 is: 181,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,501.60 : 189,752.40 = 121,252.80 : x
  2. Step 2: Convert to fraction form
    126,501.60/189,752.40 = 121,252.80/x
  3. Step 3: Cross multiply
    126,501.60x = 189,752.40 × 121,252.80
  4. Step 4: Simplify right side
    126,501.60x = 23,008,009,806.72
  5. Step 5: Solve for x
    x = 23,008,009,806.72/126,501.60
  6. Step 6: Final answer
    x = 181,879.20

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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.