Home / 191,331.70-286,997.55-121,290.10

Finding the Fourth Proportional to 191,331.70, 286,997.55 and 121,290.10

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Solution

The fourth proportional to 191,331.70, 286,997.55 and 121,290.10 is: 181,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,331.70 : 286,997.55 = 121,290.10 : x
  2. Step 2: Convert to fraction form
    191,331.70/286,997.55 = 121,290.10/x
  3. Step 3: Cross multiply
    191,331.70x = 286,997.55 × 121,290.10
  4. Step 4: Simplify right side
    191,331.70x = 34,809,961,539.26
  5. Step 5: Solve for x
    x = 34,809,961,539.26/191,331.70
  6. Step 6: Final answer
    x = 181,935.15

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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.