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Finding the Fourth Proportional to 101,260.32, 151,890.40 and 79,040.40

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Solution

The fourth proportional to 101,260.32, 151,890.40 and 79,040.40 is: 118,560.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,260.32 : 151,890.40 = 79,040.40 : x
  2. Step 2: Convert to fraction form
    101,260.32/151,890.40 = 79,040.40/x
  3. Step 3: Cross multiply
    101,260.32x = 151,890.40 × 79,040.40
  4. Step 4: Simplify right side
    101,260.32x = 12,005,477,972.16
  5. Step 5: Solve for x
    x = 12,005,477,972.16/101,260.32
  6. Step 6: Final answer
    x = 118,560.54

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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.