Home / 272,734.63-409,166.34-85,746.13

Finding the Fourth Proportional to 272,734.63, 409,166.34 and 85,746.13

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Solution

The fourth proportional to 272,734.63, 409,166.34 and 85,746.13 is: 128,639.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,734.63 : 409,166.34 = 85,746.13 : x
  2. Step 2: Convert to fraction form
    272,734.63/409,166.34 = 85,746.13/x
  3. Step 3: Cross multiply
    272,734.63x = 409,166.34 × 85,746.13
  4. Step 4: Simplify right side
    272,734.63x = 35,084,428,836.80
  5. Step 5: Solve for x
    x = 35,084,428,836.80/272,734.63
  6. Step 6: Final answer
    x = 128,639.44

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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.