Home / 105,689.40-158,554.78-39,130.12

Finding the Fourth Proportional to 105,689.40, 158,554.78 and 39,130.12

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Solution

The fourth proportional to 105,689.40, 158,554.78 and 39,130.12 is: 58,702.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,689.40 : 158,554.78 = 39,130.12 : x
  2. Step 2: Convert to fraction form
    105,689.40/158,554.78 = 39,130.12/x
  3. Step 3: Cross multiply
    105,689.40x = 158,554.78 × 39,130.12
  4. Step 4: Simplify right side
    105,689.40x = 6,204,267,567.97
  5. Step 5: Solve for x
    x = 6,204,267,567.97/105,689.40
  6. Step 6: Final answer
    x = 58,702.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.