Home / 211,780.13-292,282.92-121,123.52

Finding the Fourth Proportional to 211,780.13, 292,282.92 and 121,123.52

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Solution

The fourth proportional to 211,780.13, 292,282.92 and 121,123.52 is: 167,165.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,780.13 : 292,282.92 = 121,123.52 : x
  2. Step 2: Convert to fraction form
    211,780.13/292,282.92 = 121,123.52/x
  3. Step 3: Cross multiply
    211,780.13x = 292,282.92 × 121,123.52
  4. Step 4: Simplify right side
    211,780.13x = 35,402,334,039.25
  5. Step 5: Solve for x
    x = 35,402,334,039.25/211,780.13
  6. Step 6: Final answer
    x = 167,165.51

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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.