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Finding the Fourth Proportional to 88,749.60, 122,163.71 and 77,399.07

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Solution

The fourth proportional to 88,749.60, 122,163.71 and 77,399.07 is: 106,539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,749.60 : 122,163.71 = 77,399.07 : x
  2. Step 2: Convert to fraction form
    88,749.60/122,163.71 = 77,399.07/x
  3. Step 3: Cross multiply
    88,749.60x = 122,163.71 × 77,399.07
  4. Step 4: Simplify right side
    88,749.60x = 9,455,357,154.75
  5. Step 5: Solve for x
    x = 9,455,357,154.75/88,749.60
  6. Step 6: Final answer
    x = 106,539.72

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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.