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Finding the Fourth Proportional to 121,347.80, 182,021.70 and 119,792.60

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Solution

The fourth proportional to 121,347.80, 182,021.70 and 119,792.60 is: 179,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,347.80 : 182,021.70 = 119,792.60 : x
  2. Step 2: Convert to fraction form
    121,347.80/182,021.70 = 119,792.60/x
  3. Step 3: Cross multiply
    121,347.80x = 182,021.70 × 119,792.60
  4. Step 4: Simplify right side
    121,347.80x = 21,804,852,699.42
  5. Step 5: Solve for x
    x = 21,804,852,699.42/121,347.80
  6. Step 6: Final answer
    x = 179,688.90

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1.5x scale

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.