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Finding the Fourth Proportional to 111,528.65, 167,293.22 and 78,396.98

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Solution

The fourth proportional to 111,528.65, 167,293.22 and 78,396.98 is: 117,595.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,528.65 : 167,293.22 = 78,396.98 : x
  2. Step 2: Convert to fraction form
    111,528.65/167,293.22 = 78,396.98/x
  3. Step 3: Cross multiply
    111,528.65x = 167,293.22 × 78,396.98
  4. Step 4: Simplify right side
    111,528.65x = 13,115,281,994.02
  5. Step 5: Solve for x
    x = 13,115,281,994.02/111,528.65
  6. Step 6: Final answer
    x = 117,595.63

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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.