Home / 126,036.07-189,109.69-66,857.22

Finding the Fourth Proportional to 126,036.07, 189,109.69 and 66,857.22

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Solution

The fourth proportional to 126,036.07, 189,109.69 and 66,857.22 is: 100,315.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,036.07 : 189,109.69 = 66,857.22 : x
  2. Step 2: Convert to fraction form
    126,036.07/189,109.69 = 66,857.22/x
  3. Step 3: Cross multiply
    126,036.07x = 189,109.69 × 66,857.22
  4. Step 4: Simplify right side
    126,036.07x = 12,643,347,981.32
  5. Step 5: Solve for x
    x = 12,643,347,981.32/126,036.07
  6. Step 6: Final answer
    x = 100,315.32

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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.