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Finding the Fourth Proportional to 104,108.54, 143,598.56 and 65,916.63

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Solution

The fourth proportional to 104,108.54, 143,598.56 and 65,916.63 is: 90,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,108.54 : 143,598.56 = 65,916.63 : x
  2. Step 2: Convert to fraction form
    104,108.54/143,598.56 = 65,916.63/x
  3. Step 3: Cross multiply
    104,108.54x = 143,598.56 × 65,916.63
  4. Step 4: Simplify right side
    104,108.54x = 9,465,532,818.47
  5. Step 5: Solve for x
    x = 9,465,532,818.47/104,108.54
  6. Step 6: Final answer
    x = 90,919.85

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1.5x scale

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.