Home / 209,929.10-314,966.55-91,685.30

Finding the Fourth Proportional to 209,929.10, 314,966.55 and 91,685.30

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Solution

The fourth proportional to 209,929.10, 314,966.55 and 91,685.30 is: 137,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,929.10 : 314,966.55 = 91,685.30 : x
  2. Step 2: Convert to fraction form
    209,929.10/314,966.55 = 91,685.30/x
  3. Step 3: Cross multiply
    209,929.10x = 314,966.55 × 91,685.30
  4. Step 4: Simplify right side
    209,929.10x = 28,877,802,626.72
  5. Step 5: Solve for x
    x = 28,877,802,626.72/209,929.10
  6. Step 6: Final answer
    x = 137,559.79

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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.