Home / 142,790.19-197,045.51-79,133.91

Finding the Fourth Proportional to 142,790.19, 197,045.51 and 79,133.91

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Solution

The fourth proportional to 142,790.19, 197,045.51 and 79,133.91 is: 109,202.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,790.19 : 197,045.51 = 79,133.91 : x
  2. Step 2: Convert to fraction form
    142,790.19/197,045.51 = 79,133.91/x
  3. Step 3: Cross multiply
    142,790.19x = 197,045.51 × 79,133.91
  4. Step 4: Simplify right side
    142,790.19x = 15,592,981,258.57
  5. Step 5: Solve for x
    x = 15,592,981,258.57/142,790.19
  6. Step 6: Final answer
    x = 109,202.05

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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.