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Finding the Fourth Proportional to 158,814.84, 219,165.04 and 86,217.83

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Solution

The fourth proportional to 158,814.84, 219,165.04 and 86,217.83 is: 118,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,814.84 : 219,165.04 = 86,217.83 : x
  2. Step 2: Convert to fraction form
    158,814.84/219,165.04 = 86,217.83/x
  3. Step 3: Cross multiply
    158,814.84x = 219,165.04 × 86,217.83
  4. Step 4: Simplify right side
    158,814.84x = 18,895,933,994.48
  5. Step 5: Solve for x
    x = 18,895,933,994.48/158,814.84
  6. Step 6: Final answer
    x = 118,980.91

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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.