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Finding the Fourth Proportional to 100,590.95, 151,488.20 and 91,623.03

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Solution

The fourth proportional to 100,590.95, 151,488.20 and 91,623.03 is: 137,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,590.95 : 151,488.20 = 91,623.03 : x
  2. Step 2: Convert to fraction form
    100,590.95/151,488.20 = 91,623.03/x
  3. Step 3: Cross multiply
    100,590.95x = 151,488.20 × 91,623.03
  4. Step 4: Simplify right side
    100,590.95x = 13,879,807,435.13
  5. Step 5: Solve for x
    x = 13,879,807,435.13/100,590.95
  6. Step 6: Final answer
    x = 137,982.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.