Home / 105,064.21-144,988.95-57,318.56

Finding the Fourth Proportional to 105,064.21, 144,988.95 and 57,318.56

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Solution

The fourth proportional to 105,064.21, 144,988.95 and 57,318.56 is: 79,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,064.21 : 144,988.95 = 57,318.56 : x
  2. Step 2: Convert to fraction form
    105,064.21/144,988.95 = 57,318.56/x
  3. Step 3: Cross multiply
    105,064.21x = 144,988.95 × 57,318.56
  4. Step 4: Simplify right side
    105,064.21x = 8,310,557,829.91
  5. Step 5: Solve for x
    x = 8,310,557,829.91/105,064.21
  6. Step 6: Final answer
    x = 79,099.80

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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.