Home / 142,134.06-196,144.95-78,476.22

Finding the Fourth Proportional to 142,134.06, 196,144.95 and 78,476.22

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Solution

The fourth proportional to 142,134.06, 196,144.95 and 78,476.22 is: 108,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,134.06 : 196,144.95 = 78,476.22 : x
  2. Step 2: Convert to fraction form
    142,134.06/196,144.95 = 78,476.22/x
  3. Step 3: Cross multiply
    142,134.06x = 196,144.95 × 78,476.22
  4. Step 4: Simplify right side
    142,134.06x = 15,392,714,248.09
  5. Step 5: Solve for x
    x = 15,392,714,248.09/142,134.06
  6. Step 6: Final answer
    x = 108,297.15

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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.