Home / 120,548.16-180,801.60-31,802.58

Finding the Fourth Proportional to 120,548.16, 180,801.60 and 31,802.58

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Solution

The fourth proportional to 120,548.16, 180,801.60 and 31,802.58 is: 47,698.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,548.16 : 180,801.60 = 31,802.58 : x
  2. Step 2: Convert to fraction form
    120,548.16/180,801.60 = 31,802.58/x
  3. Step 3: Cross multiply
    120,548.16x = 180,801.60 × 31,802.58
  4. Step 4: Simplify right side
    120,548.16x = 5,749,957,348.13
  5. Step 5: Solve for x
    x = 5,749,957,348.13/120,548.16
  6. Step 6: Final answer
    x = 47,698.42

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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.