Home / 142,192.06-196,221.29-78,528.49

Finding the Fourth Proportional to 142,192.06, 196,221.29 and 78,528.49

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Solution

The fourth proportional to 142,192.06, 196,221.29 and 78,528.49 is: 108,367.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,192.06 : 196,221.29 = 78,528.49 : x
  2. Step 2: Convert to fraction form
    142,192.06/196,221.29 = 78,528.49/x
  3. Step 3: Cross multiply
    142,192.06x = 196,221.29 × 78,528.49
  4. Step 4: Simplify right side
    142,192.06x = 15,408,960,726.36
  5. Step 5: Solve for x
    x = 15,408,960,726.36/142,192.06
  6. Step 6: Final answer
    x = 108,367.24

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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.