Home / 126,689.09-190,088.73-79,412.51

Finding the Fourth Proportional to 126,689.09, 190,088.73 and 79,412.51

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Solution

The fourth proportional to 126,689.09, 190,088.73 and 79,412.51 is: 119,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,689.09 : 190,088.73 = 79,412.51 : x
  2. Step 2: Convert to fraction form
    126,689.09/190,088.73 = 79,412.51/x
  3. Step 3: Cross multiply
    126,689.09x = 190,088.73 × 79,412.51
  4. Step 4: Simplify right side
    126,689.09x = 15,095,422,221.57
  5. Step 5: Solve for x
    x = 15,095,422,221.57/126,689.09
  6. Step 6: Final answer
    x = 119,153.30

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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.