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Finding the Fourth Proportional to 105,101.99, 145,043.82 and 57,358.41

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Solution

The fourth proportional to 105,101.99, 145,043.82 and 57,358.41 is: 79,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,101.99 : 145,043.82 = 57,358.41 : x
  2. Step 2: Convert to fraction form
    105,101.99/145,043.82 = 57,358.41/x
  3. Step 3: Cross multiply
    105,101.99x = 145,043.82 × 57,358.41
  4. Step 4: Simplify right side
    105,101.99x = 8,319,482,895.53
  5. Step 5: Solve for x
    x = 8,319,482,895.53/105,101.99
  6. Step 6: Final answer
    x = 79,156.29

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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.