Home / 145,056.92-200,178.02-81,394.57

Finding the Fourth Proportional to 145,056.92, 200,178.02 and 81,394.57

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Solution

The fourth proportional to 145,056.92, 200,178.02 and 81,394.57 is: 112,324.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,056.92 : 200,178.02 = 81,394.57 : x
  2. Step 2: Convert to fraction form
    145,056.92/200,178.02 = 81,394.57/x
  3. Step 3: Cross multiply
    145,056.92x = 200,178.02 × 81,394.57
  4. Step 4: Simplify right side
    145,056.92x = 16,293,402,453.49
  5. Step 5: Solve for x
    x = 16,293,402,453.49/145,056.92
  6. Step 6: Final answer
    x = 112,324.20

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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.