Home / 105,185.16-145,156.05-57,438.52

Finding the Fourth Proportional to 105,185.16, 145,156.05 and 57,438.52

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Solution

The fourth proportional to 105,185.16, 145,156.05 and 57,438.52 is: 79,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,185.16 : 145,156.05 = 57,438.52 : x
  2. Step 2: Convert to fraction form
    105,185.16/145,156.05 = 57,438.52/x
  3. Step 3: Cross multiply
    105,185.16x = 145,156.05 × 57,438.52
  4. Step 4: Simplify right side
    105,185.16x = 8,337,548,318.16
  5. Step 5: Solve for x
    x = 8,337,548,318.16/105,185.16
  6. Step 6: Final answer
    x = 79,265.45

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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.