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Finding the Fourth Proportional to 145,472.84, 200,750.56 and 81,810.60

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Solution

The fourth proportional to 145,472.84, 200,750.56 and 81,810.60 is: 112,897.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,472.84 : 200,750.56 = 81,810.60 : x
  2. Step 2: Convert to fraction form
    145,472.84/200,750.56 = 81,810.60/x
  3. Step 3: Cross multiply
    145,472.84x = 200,750.56 × 81,810.60
  4. Step 4: Simplify right side
    145,472.84x = 16,423,523,763.94
  5. Step 5: Solve for x
    x = 16,423,523,763.94/145,472.84
  6. Step 6: Final answer
    x = 112,897.53

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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.