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Finding the Fourth Proportional to 158,015.61, 218,061.52 and 86,395.61

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Solution

The fourth proportional to 158,015.61, 218,061.52 and 86,395.61 is: 119,225.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,015.61 : 218,061.52 = 86,395.61 : x
  2. Step 2: Convert to fraction form
    158,015.61/218,061.52 = 86,395.61/x
  3. Step 3: Cross multiply
    158,015.61x = 218,061.52 × 86,395.61
  4. Step 4: Simplify right side
    158,015.61x = 18,839,558,367.09
  5. Step 5: Solve for x
    x = 18,839,558,367.09/158,015.61
  6. Step 6: Final answer
    x = 119,225.93

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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.