Home / 142,032.80-196,005.07-78,370.58

Finding the Fourth Proportional to 142,032.80, 196,005.07 and 78,370.58

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Solution

The fourth proportional to 142,032.80, 196,005.07 and 78,370.58 is: 108,151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,032.80 : 196,005.07 = 78,370.58 : x
  2. Step 2: Convert to fraction form
    142,032.80/196,005.07 = 78,370.58/x
  3. Step 3: Cross multiply
    142,032.80x = 196,005.07 × 78,370.58
  4. Step 4: Simplify right side
    142,032.80x = 15,361,031,018.84
  5. Step 5: Solve for x
    x = 15,361,031,018.84/142,032.80
  6. Step 6: Final answer
    x = 108,151.29

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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.