Home / 142,992.51-197,329.59-78,462.16

Finding the Fourth Proportional to 142,992.51, 197,329.59 and 78,462.16

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Solution

The fourth proportional to 142,992.51, 197,329.59 and 78,462.16 is: 108,277.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992.51 : 197,329.59 = 78,462.16 : x
  2. Step 2: Convert to fraction form
    142,992.51/197,329.59 = 78,462.16/x
  3. Step 3: Cross multiply
    142,992.51x = 197,329.59 × 78,462.16
  4. Step 4: Simplify right side
    142,992.51x = 15,482,906,479.97
  5. Step 5: Solve for x
    x = 15,482,906,479.97/142,992.51
  6. Step 6: Final answer
    x = 108,277.74

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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.