Home / 88,688.40-133,032.60-76,765.20

Finding the Fourth Proportional to 88,688.40, 133,032.60 and 76,765.20

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Solution

The fourth proportional to 88,688.40, 133,032.60 and 76,765.20 is: 115,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,688.40 : 133,032.60 = 76,765.20 : x
  2. Step 2: Convert to fraction form
    88,688.40/133,032.60 = 76,765.20/x
  3. Step 3: Cross multiply
    88,688.40x = 133,032.60 × 76,765.20
  4. Step 4: Simplify right side
    88,688.40x = 10,212,274,145.52
  5. Step 5: Solve for x
    x = 10,212,274,145.52/88,688.40
  6. Step 6: Final answer
    x = 115,147.80

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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.