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Finding the Fourth Proportional to 158,228.74, 218,357.72 and 86,607.22

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Solution

The fourth proportional to 158,228.74, 218,357.72 and 86,607.22 is: 119,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,228.74 : 218,357.72 = 86,607.22 : x
  2. Step 2: Convert to fraction form
    158,228.74/218,357.72 = 86,607.22/x
  3. Step 3: Cross multiply
    158,228.74x = 218,357.72 × 86,607.22
  4. Step 4: Simplify right side
    158,228.74x = 18,911,355,094.74
  5. Step 5: Solve for x
    x = 18,911,355,094.74/158,228.74
  6. Step 6: Final answer
    x = 119,519.09

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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.