Home / 77,289.20-116,106.60-74,140.40

Finding the Fourth Proportional to 77,289.20, 116,106.60 and 74,140.40

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Solution

The fourth proportional to 77,289.20, 116,106.60 and 74,140.40 is: 111,376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,289.20 : 116,106.60 = 74,140.40 : x
  2. Step 2: Convert to fraction form
    77,289.20/116,106.60 = 74,140.40/x
  3. Step 3: Cross multiply
    77,289.20x = 116,106.60 × 74,140.40
  4. Step 4: Simplify right side
    77,289.20x = 8,608,189,766.64
  5. Step 5: Solve for x
    x = 8,608,189,766.64/77,289.20
  6. Step 6: Final answer
    x = 111,376.36

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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.