Home / 161,389.89-242,152.07-86,490.81

Finding the Fourth Proportional to 161,389.89, 242,152.07 and 86,490.81

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Solution

The fourth proportional to 161,389.89, 242,152.07 and 86,490.81 is: 129,772.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,389.89 : 242,152.07 = 86,490.81 : x
  2. Step 2: Convert to fraction form
    161,389.89/242,152.07 = 86,490.81/x
  3. Step 3: Cross multiply
    161,389.89x = 242,152.07 × 86,490.81
  4. Step 4: Simplify right side
    161,389.89x = 20,943,928,245.02
  5. Step 5: Solve for x
    x = 20,943,928,245.02/161,389.89
  6. Step 6: Final answer
    x = 129,772.24

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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.