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Finding the Fourth Proportional to 145,552.68, 200,841.12 and 81,886.68

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Solution

The fourth proportional to 145,552.68, 200,841.12 and 81,886.68 is: 112,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,552.68 : 200,841.12 = 81,886.68 : x
  2. Step 2: Convert to fraction form
    145,552.68/200,841.12 = 81,886.68/x
  3. Step 3: Cross multiply
    145,552.68x = 200,841.12 × 81,886.68
  4. Step 4: Simplify right side
    145,552.68x = 16,446,212,524.28
  5. Step 5: Solve for x
    x = 16,446,212,524.28/145,552.68
  6. Step 6: Final answer
    x = 112,991.48

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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.