Home / 105,123.11-145,068.84-57,376.04

Finding the Fourth Proportional to 105,123.11, 145,068.84 and 57,376.04

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Solution

The fourth proportional to 105,123.11, 145,068.84 and 57,376.04 is: 79,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,123.11 : 145,068.84 = 57,376.04 : x
  2. Step 2: Convert to fraction form
    105,123.11/145,068.84 = 57,376.04/x
  3. Step 3: Cross multiply
    105,123.11x = 145,068.84 × 57,376.04
  4. Step 4: Simplify right side
    105,123.11x = 8,323,474,841.25
  5. Step 5: Solve for x
    x = 8,323,474,841.25/105,123.11
  6. Step 6: Final answer
    x = 79,178.36

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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.