Home / 155,511.50-214,631.79-117,720.14

Finding the Fourth Proportional to 155,511.50, 214,631.79 and 117,720.14

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Solution

The fourth proportional to 155,511.50, 214,631.79 and 117,720.14 is: 162,473.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,511.50 : 214,631.79 = 117,720.14 : x
  2. Step 2: Convert to fraction form
    155,511.50/214,631.79 = 117,720.14/x
  3. Step 3: Cross multiply
    155,511.50x = 214,631.79 × 117,720.14
  4. Step 4: Simplify right side
    155,511.50x = 25,266,484,367.25
  5. Step 5: Solve for x
    x = 25,266,484,367.25/155,511.50
  6. Step 6: Final answer
    x = 162,473.41

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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.