Home / 211,979.93-292,459.95-131,378.04

Finding the Fourth Proportional to 211,979.93, 292,459.95 and 131,378.04

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Solution

The fourth proportional to 211,979.93, 292,459.95 and 131,378.04 is: 181,256.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,979.93 : 292,459.95 = 131,378.04 : x
  2. Step 2: Convert to fraction form
    211,979.93/292,459.95 = 131,378.04/x
  3. Step 3: Cross multiply
    211,979.93x = 292,459.95 × 131,378.04
  4. Step 4: Simplify right side
    211,979.93x = 38,422,815,009.50
  5. Step 5: Solve for x
    x = 38,422,815,009.50/211,979.93
  6. Step 6: Final answer
    x = 181,256.86

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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.