Home / 142,990.15-197,326.65-79,327.93

Finding the Fourth Proportional to 142,990.15, 197,326.65 and 79,327.93

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Solution

The fourth proportional to 142,990.15, 197,326.65 and 79,327.93 is: 109,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,990.15 : 197,326.65 = 79,327.93 : x
  2. Step 2: Convert to fraction form
    142,990.15/197,326.65 = 79,327.93/x
  3. Step 3: Cross multiply
    142,990.15x = 197,326.65 × 79,327.93
  4. Step 4: Simplify right side
    142,990.15x = 15,653,514,678.33
  5. Step 5: Solve for x
    x = 15,653,514,678.33/142,990.15
  6. Step 6: Final answer
    x = 109,472.68

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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.