Home / 118,298.40-163,212.60-78,032.04

Finding the Fourth Proportional to 118,298.40, 163,212.60 and 78,032.04

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Solution

The fourth proportional to 118,298.40, 163,212.60 and 78,032.04 is: 107,658.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,298.40 : 163,212.60 = 78,032.04 : x
  2. Step 2: Convert to fraction form
    118,298.40/163,212.60 = 78,032.04/x
  3. Step 3: Cross multiply
    118,298.40x = 163,212.60 × 78,032.04
  4. Step 4: Simplify right side
    118,298.40x = 12,735,812,131.70
  5. Step 5: Solve for x
    x = 12,735,812,131.70/118,298.40
  6. Step 6: Final answer
    x = 107,658.36

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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.