Home / 181,920.30-272,880.45-128,776.20

Finding the Fourth Proportional to 181,920.30, 272,880.45 and 128,776.20

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Solution

The fourth proportional to 181,920.30, 272,880.45 and 128,776.20 is: 193,164.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,920.30 : 272,880.45 = 128,776.20 : x
  2. Step 2: Convert to fraction form
    181,920.30/272,880.45 = 128,776.20/x
  3. Step 3: Cross multiply
    181,920.30x = 272,880.45 × 128,776.20
  4. Step 4: Simplify right side
    181,920.30x = 35,140,507,405.29
  5. Step 5: Solve for x
    x = 35,140,507,405.29/181,920.30
  6. Step 6: Final answer
    x = 193,164.30

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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.