Home / 142,426.76-196,525.85-78,752.25

Finding the Fourth Proportional to 142,426.76, 196,525.85 and 78,752.25

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Solution

The fourth proportional to 142,426.76, 196,525.85 and 78,752.25 is: 108,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,426.76 : 196,525.85 = 78,752.25 : x
  2. Step 2: Convert to fraction form
    142,426.76/196,525.85 = 78,752.25/x
  3. Step 3: Cross multiply
    142,426.76x = 196,525.85 × 78,752.25
  4. Step 4: Simplify right side
    142,426.76x = 15,476,852,476.90
  5. Step 5: Solve for x
    x = 15,476,852,476.90/142,426.76
  6. Step 6: Final answer
    x = 108,665.35

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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.