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Finding the Fourth Proportional to 158,085.84, 218,163.68 and 86,465.86

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Solution

The fourth proportional to 158,085.84, 218,163.68 and 86,465.86 is: 119,325.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,085.84 : 218,163.68 = 86,465.86 : x
  2. Step 2: Convert to fraction form
    158,085.84/218,163.68 = 86,465.86/x
  3. Step 3: Cross multiply
    158,085.84x = 218,163.68 × 86,465.86
  4. Step 4: Simplify right side
    158,085.84x = 18,863,710,211.96
  5. Step 5: Solve for x
    x = 18,863,710,211.96/158,085.84
  6. Step 6: Final answer
    x = 119,325.74

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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.