Home / 88,918.20-133,085.70-69,089.40

Finding the Fourth Proportional to 88,918.20, 133,085.70 and 69,089.40

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Solution

The fourth proportional to 88,918.20, 133,085.70 and 69,089.40 is: 103,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,918.20 : 133,085.70 = 69,089.40 : x
  2. Step 2: Convert to fraction form
    88,918.20/133,085.70 = 69,089.40/x
  3. Step 3: Cross multiply
    88,918.20x = 133,085.70 × 69,089.40
  4. Step 4: Simplify right side
    88,918.20x = 9,194,811,161.58
  5. Step 5: Solve for x
    x = 9,194,811,161.58/88,918.20
  6. Step 6: Final answer
    x = 103,407.53

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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.