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Finding the Fourth Proportional to 101,384.28, 139,966.20 and 61,107.84

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Solution

The fourth proportional to 101,384.28, 139,966.20 and 61,107.84 is: 84,362.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,384.28 : 139,966.20 = 61,107.84 : x
  2. Step 2: Convert to fraction form
    101,384.28/139,966.20 = 61,107.84/x
  3. Step 3: Cross multiply
    101,384.28x = 139,966.20 × 61,107.84
  4. Step 4: Simplify right side
    101,384.28x = 8,553,032,155.01
  5. Step 5: Solve for x
    x = 8,553,032,155.01/101,384.28
  6. Step 6: Final answer
    x = 84,362.51

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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.