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Finding the Fourth Proportional to 111,526.40, 167,289.84 and 78,394.73

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Solution

The fourth proportional to 111,526.40, 167,289.84 and 78,394.73 is: 117,592.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,526.40 : 167,289.84 = 78,394.73 : x
  2. Step 2: Convert to fraction form
    111,526.40/167,289.84 = 78,394.73/x
  3. Step 3: Cross multiply
    111,526.40x = 167,289.84 × 78,394.73
  4. Step 4: Simplify right side
    111,526.40x = 13,114,641,002.09
  5. Step 5: Solve for x
    x = 13,114,641,002.09/111,526.40
  6. Step 6: Final answer
    x = 117,592.25

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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.