Home / 142,160.77-196,176.72-78,497.20

Finding the Fourth Proportional to 142,160.77, 196,176.72 and 78,497.20

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Solution

The fourth proportional to 142,160.77, 196,176.72 and 78,497.20 is: 108,323.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,160.77 : 196,176.72 = 78,497.20 : x
  2. Step 2: Convert to fraction form
    142,160.77/196,176.72 = 78,497.20/x
  3. Step 3: Cross multiply
    142,160.77x = 196,176.72 × 78,497.20
  4. Step 4: Simplify right side
    142,160.77x = 15,399,321,851.81
  5. Step 5: Solve for x
    x = 15,399,321,851.81/142,160.77
  6. Step 6: Final answer
    x = 108,323.29

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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.