Home / 102,680.70-141,623.55-64,918.50

Finding the Fourth Proportional to 102,680.70, 141,623.55 and 64,918.50

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Solution

The fourth proportional to 102,680.70, 141,623.55 and 64,918.50 is: 89,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,680.70 : 141,623.55 = 64,918.50 : x
  2. Step 2: Convert to fraction form
    102,680.70/141,623.55 = 64,918.50/x
  3. Step 3: Cross multiply
    102,680.70x = 141,623.55 × 64,918.50
  4. Step 4: Simplify right side
    102,680.70x = 9,193,988,430.68
  5. Step 5: Solve for x
    x = 9,193,988,430.68/102,680.70
  6. Step 6: Final answer
    x = 89,539.60

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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.