Home / 118,981.04-164,230.60-76,539.60

Finding the Fourth Proportional to 118,981.04, 164,230.60 and 76,539.60

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Solution

The fourth proportional to 118,981.04, 164,230.60 and 76,539.60 is: 105,648.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,981.04 : 164,230.60 = 76,539.60 : x
  2. Step 2: Convert to fraction form
    118,981.04/164,230.60 = 76,539.60/x
  3. Step 3: Cross multiply
    118,981.04x = 164,230.60 × 76,539.60
  4. Step 4: Simplify right side
    118,981.04x = 12,570,144,431.76
  5. Step 5: Solve for x
    x = 12,570,144,431.76/118,981.04
  6. Step 6: Final answer
    x = 105,648.30

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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.