Home / 158,781.51-219,117.62-87,162.75

Finding the Fourth Proportional to 158,781.51, 219,117.62 and 87,162.75

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Solution

The fourth proportional to 158,781.51, 219,117.62 and 87,162.75 is: 120,284.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,781.51 : 219,117.62 = 87,162.75 : x
  2. Step 2: Convert to fraction form
    158,781.51/219,117.62 = 87,162.75/x
  3. Step 3: Cross multiply
    158,781.51x = 219,117.62 × 87,162.75
  4. Step 4: Simplify right side
    158,781.51x = 19,098,894,332.66
  5. Step 5: Solve for x
    x = 19,098,894,332.66/158,781.51
  6. Step 6: Final answer
    x = 120,284.12

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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.