Home / 107,920.20-161,880.30-98,243.40

Finding the Fourth Proportional to 107,920.20, 161,880.30 and 98,243.40

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Solution

The fourth proportional to 107,920.20, 161,880.30 and 98,243.40 is: 147,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,920.20 : 161,880.30 = 98,243.40 : x
  2. Step 2: Convert to fraction form
    107,920.20/161,880.30 = 98,243.40/x
  3. Step 3: Cross multiply
    107,920.20x = 161,880.30 × 98,243.40
  4. Step 4: Simplify right side
    107,920.20x = 15,903,671,065.02
  5. Step 5: Solve for x
    x = 15,903,671,065.02/107,920.20
  6. Step 6: Final answer
    x = 147,365.10

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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.