Home / 209,721.12-314,579.76-85,032.48

Finding the Fourth Proportional to 209,721.12, 314,579.76 and 85,032.48

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Solution

The fourth proportional to 209,721.12, 314,579.76 and 85,032.48 is: 127,547.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,721.12 : 314,579.76 = 85,032.48 : x
  2. Step 2: Convert to fraction form
    209,721.12/314,579.76 = 85,032.48/x
  3. Step 3: Cross multiply
    209,721.12x = 314,579.76 × 85,032.48
  4. Step 4: Simplify right side
    209,721.12x = 26,749,497,150.60
  5. Step 5: Solve for x
    x = 26,749,497,150.60/209,721.12
  6. Step 6: Final answer
    x = 127,547.94

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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.