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Finding the Fourth Proportional to 88,122.71, 121,141.73 and 75,813.15

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Solution

The fourth proportional to 88,122.71, 121,141.73 and 75,813.15 is: 104,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,122.71 : 121,141.73 = 75,813.15 : x
  2. Step 2: Convert to fraction form
    88,122.71/121,141.73 = 75,813.15/x
  3. Step 3: Cross multiply
    88,122.71x = 121,141.73 × 75,813.15
  4. Step 4: Simplify right side
    88,122.71x = 9,184,135,352.51
  5. Step 5: Solve for x
    x = 9,184,135,352.51/88,122.71
  6. Step 6: Final answer
    x = 104,219.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.