Home / 198,510.81-297,598.77-86,106.36

Finding the Fourth Proportional to 198,510.81, 297,598.77 and 86,106.36

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Solution

The fourth proportional to 198,510.81, 297,598.77 and 86,106.36 is: 129,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,510.81 : 297,598.77 = 86,106.36 : x
  2. Step 2: Convert to fraction form
    198,510.81/297,598.77 = 86,106.36/x
  3. Step 3: Cross multiply
    198,510.81x = 297,598.77 × 86,106.36
  4. Step 4: Simplify right side
    198,510.81x = 25,625,146,825.18
  5. Step 5: Solve for x
    x = 25,625,146,825.18/198,510.81
  6. Step 6: Final answer
    x = 129,086.91

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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.