Home / 193,140.80-289,322.40-99,699.20

Finding the Fourth Proportional to 193,140.80, 289,322.40 and 99,699.20

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Solution

The fourth proportional to 193,140.80, 289,322.40 and 99,699.20 is: 149,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,140.80 : 289,322.40 = 99,699.20 : x
  2. Step 2: Convert to fraction form
    193,140.80/289,322.40 = 99,699.20/x
  3. Step 3: Cross multiply
    193,140.80x = 289,322.40 × 99,699.20
  4. Step 4: Simplify right side
    193,140.80x = 28,845,211,822.08
  5. Step 5: Solve for x
    x = 28,845,211,822.08/193,140.80
  6. Step 6: Final answer
    x = 149,348.10

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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.