Home / 145,541.72-200,781.18-105,191.58

Finding the Fourth Proportional to 145,541.72, 200,781.18 and 105,191.58

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Solution

The fourth proportional to 145,541.72, 200,781.18 and 105,191.58 is: 145,116.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,541.72 : 200,781.18 = 105,191.58 : x
  2. Step 2: Convert to fraction form
    145,541.72/200,781.18 = 105,191.58/x
  3. Step 3: Cross multiply
    145,541.72x = 200,781.18 × 105,191.58
  4. Step 4: Simplify right side
    145,541.72x = 21,120,489,558.46
  5. Step 5: Solve for x
    x = 21,120,489,558.46/145,541.72
  6. Step 6: Final answer
    x = 145,116.39

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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.