Home / 121,585.51-167,758.45-71,274.79

Finding the Fourth Proportional to 121,585.51, 167,758.45 and 71,274.79

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Solution

The fourth proportional to 121,585.51, 167,758.45 and 71,274.79 is: 98,341.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,585.51 : 167,758.45 = 71,274.79 : x
  2. Step 2: Convert to fraction form
    121,585.51/167,758.45 = 71,274.79/x
  3. Step 3: Cross multiply
    121,585.51x = 167,758.45 × 71,274.79
  4. Step 4: Simplify right side
    121,585.51x = 11,956,948,294.48
  5. Step 5: Solve for x
    x = 11,956,948,294.48/121,585.51
  6. Step 6: Final answer
    x = 98,341.89

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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.