Home / 191,814.20-287,807.70-91,935.80

Finding the Fourth Proportional to 191,814.20, 287,807.70 and 91,935.80

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Solution

The fourth proportional to 191,814.20, 287,807.70 and 91,935.80 is: 137,945.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,814.20 : 287,807.70 = 91,935.80 : x
  2. Step 2: Convert to fraction form
    191,814.20/287,807.70 = 91,935.80/x
  3. Step 3: Cross multiply
    191,814.20x = 287,807.70 × 91,935.80
  4. Step 4: Simplify right side
    191,814.20x = 26,459,831,145.66
  5. Step 5: Solve for x
    x = 26,459,831,145.66/191,814.20
  6. Step 6: Final answer
    x = 137,945.11

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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.