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Finding the Fourth Proportional to 147,660.57, 203,772.21 and 83,130.91

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Solution

The fourth proportional to 147,660.57, 203,772.21 and 83,130.91 is: 114,721.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,660.57 : 203,772.21 = 83,130.91 : x
  2. Step 2: Convert to fraction form
    147,660.57/203,772.21 = 83,130.91/x
  3. Step 3: Cross multiply
    147,660.57x = 203,772.21 × 83,130.91
  4. Step 4: Simplify right side
    147,660.57x = 16,939,768,428.84
  5. Step 5: Solve for x
    x = 16,939,768,428.84/147,660.57
  6. Step 6: Final answer
    x = 114,721.00

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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.