Home / 142,218.84-196,258.24-78,555.27

Finding the Fourth Proportional to 142,218.84, 196,258.24 and 78,555.27

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Solution

The fourth proportional to 142,218.84, 196,258.24 and 78,555.27 is: 108,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,218.84 : 196,258.24 = 78,555.27 : x
  2. Step 2: Convert to fraction form
    142,218.84/196,258.24 = 78,555.27/x
  3. Step 3: Cross multiply
    142,218.84x = 196,258.24 × 78,555.27
  4. Step 4: Simplify right side
    142,218.84x = 15,417,119,032.92
  5. Step 5: Solve for x
    x = 15,417,119,032.92/142,218.84
  6. Step 6: Final answer
    x = 108,404.20

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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.