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Finding the Fourth Proportional to 145,548.76, 200,841.22 and 81,885.48

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Solution

The fourth proportional to 145,548.76, 200,841.22 and 81,885.48 is: 112,992.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,548.76 : 200,841.22 = 81,885.48 : x
  2. Step 2: Convert to fraction form
    145,548.76/200,841.22 = 81,885.48/x
  3. Step 3: Cross multiply
    145,548.76x = 200,841.22 × 81,885.48
  4. Step 4: Simplify right side
    145,548.76x = 16,445,979,703.49
  5. Step 5: Solve for x
    x = 16,445,979,703.49/145,548.76
  6. Step 6: Final answer
    x = 112,992.92

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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.