Home / 105,562.84-145,677.18-57,165.40

Finding the Fourth Proportional to 105,562.84, 145,677.18 and 57,165.40

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Solution

The fourth proportional to 105,562.84, 145,677.18 and 57,165.40 is: 78,888.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,562.84 : 145,677.18 = 57,165.40 : x
  2. Step 2: Convert to fraction form
    105,562.84/145,677.18 = 57,165.40/x
  3. Step 3: Cross multiply
    105,562.84x = 145,677.18 × 57,165.40
  4. Step 4: Simplify right side
    105,562.84x = 8,327,694,265.57
  5. Step 5: Solve for x
    x = 8,327,694,265.57/105,562.84
  6. Step 6: Final answer
    x = 78,888.50

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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.