Home / 142,977.29-197,306.82-77,565.15

Finding the Fourth Proportional to 142,977.29, 197,306.82 and 77,565.15

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Solution

The fourth proportional to 142,977.29, 197,306.82 and 77,565.15 is: 107,038.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,977.29 : 197,306.82 = 77,565.15 : x
  2. Step 2: Convert to fraction form
    142,977.29/197,306.82 = 77,565.15/x
  3. Step 3: Cross multiply
    142,977.29x = 197,306.82 × 77,565.15
  4. Step 4: Simplify right side
    142,977.29x = 15,304,133,089.32
  5. Step 5: Solve for x
    x = 15,304,133,089.32/142,977.29
  6. Step 6: Final answer
    x = 107,038.91

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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.