Home / 181,918.80-272,878.20-128,774.70

Finding the Fourth Proportional to 181,918.80, 272,878.20 and 128,774.70

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Solution

The fourth proportional to 181,918.80, 272,878.20 and 128,774.70 is: 193,162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,918.80 : 272,878.20 = 128,774.70 : x
  2. Step 2: Convert to fraction form
    181,918.80/272,878.20 = 128,774.70/x
  3. Step 3: Cross multiply
    181,918.80x = 272,878.20 × 128,774.70
  4. Step 4: Simplify right side
    181,918.80x = 35,139,808,341.54
  5. Step 5: Solve for x
    x = 35,139,808,341.54/181,918.80
  6. Step 6: Final answer
    x = 193,162.05

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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.