Home / 120,829.80-180,886.30-89,802.60

Finding the Fourth Proportional to 120,829.80, 180,886.30 and 89,802.60

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Solution

The fourth proportional to 120,829.80, 180,886.30 and 89,802.60 is: 134,437.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,829.80 : 180,886.30 = 89,802.60 : x
  2. Step 2: Convert to fraction form
    120,829.80/180,886.30 = 89,802.60/x
  3. Step 3: Cross multiply
    120,829.80x = 180,886.30 × 89,802.60
  4. Step 4: Simplify right side
    120,829.80x = 16,244,060,044.38
  5. Step 5: Solve for x
    x = 16,244,060,044.38/120,829.80
  6. Step 6: Final answer
    x = 134,437.53

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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.