Home / 126,240.63-174,275.20-78,509.35

Finding the Fourth Proportional to 126,240.63, 174,275.20 and 78,509.35

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Solution

The fourth proportional to 126,240.63, 174,275.20 and 78,509.35 is: 108,382.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,240.63 : 174,275.20 = 78,509.35 : x
  2. Step 2: Convert to fraction form
    126,240.63/174,275.20 = 78,509.35/x
  3. Step 3: Cross multiply
    126,240.63x = 174,275.20 × 78,509.35
  4. Step 4: Simplify right side
    126,240.63x = 13,682,232,547.49
  5. Step 5: Solve for x
    x = 13,682,232,547.49/126,240.63
  6. Step 6: Final answer
    x = 108,382.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.