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Finding the Fourth Proportional to 104,686.96, 144,411.88 and 72,800.48

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Solution

The fourth proportional to 104,686.96, 144,411.88 and 72,800.48 is: 100,425.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,686.96 : 144,411.88 = 72,800.48 : x
  2. Step 2: Convert to fraction form
    104,686.96/144,411.88 = 72,800.48/x
  3. Step 3: Cross multiply
    104,686.96x = 144,411.88 × 72,800.48
  4. Step 4: Simplify right side
    104,686.96x = 10,513,254,181.70
  5. Step 5: Solve for x
    x = 10,513,254,181.70/104,686.96
  6. Step 6: Final answer
    x = 100,425.63

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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.