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Finding the Fourth Proportional to 165,624.90, 248,437.35 and 139,380.90

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Solution

The fourth proportional to 165,624.90, 248,437.35 and 139,380.90 is: 209,071.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,624.90 : 248,437.35 = 139,380.90 : x
  2. Step 2: Convert to fraction form
    165,624.90/248,437.35 = 139,380.90/x
  3. Step 3: Cross multiply
    165,624.90x = 248,437.35 × 139,380.90
  4. Step 4: Simplify right side
    165,624.90x = 34,627,421,436.62
  5. Step 5: Solve for x
    x = 34,627,421,436.62/165,624.90
  6. Step 6: Final answer
    x = 209,071.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.