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Finding the Fourth Proportional to 158,330.90, 218,492.38 and 90,346.65

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Solution

The fourth proportional to 158,330.90, 218,492.38 and 90,346.65 is: 124,675.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,330.90 : 218,492.38 = 90,346.65 : x
  2. Step 2: Convert to fraction form
    158,330.90/218,492.38 = 90,346.65/x
  3. Step 3: Cross multiply
    158,330.90x = 218,492.38 × 90,346.65
  4. Step 4: Simplify right side
    158,330.90x = 19,740,054,583.53
  5. Step 5: Solve for x
    x = 19,740,054,583.53/158,330.90
  6. Step 6: Final answer
    x = 124,675.95

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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.