Home / 118,506.24-163,648.35-76,139.19

Finding the Fourth Proportional to 118,506.24, 163,648.35 and 76,139.19

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Solution

The fourth proportional to 118,506.24, 163,648.35 and 76,139.19 is: 105,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,506.24 : 163,648.35 = 76,139.19 : x
  2. Step 2: Convert to fraction form
    118,506.24/163,648.35 = 76,139.19/x
  3. Step 3: Cross multiply
    118,506.24x = 163,648.35 × 76,139.19
  4. Step 4: Simplify right side
    118,506.24x = 12,460,052,813.84
  5. Step 5: Solve for x
    x = 12,460,052,813.84/118,506.24
  6. Step 6: Final answer
    x = 105,142.59

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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.