Home / 191,725.11-287,718.89-103,005.81

Finding the Fourth Proportional to 191,725.11, 287,718.89 and 103,005.81

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Solution

The fourth proportional to 191,725.11, 287,718.89 and 103,005.81 is: 154,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,725.11 : 287,718.89 = 103,005.81 : x
  2. Step 2: Convert to fraction form
    191,725.11/287,718.89 = 103,005.81/x
  3. Step 3: Cross multiply
    191,725.11x = 287,718.89 × 103,005.81
  4. Step 4: Simplify right side
    191,725.11x = 29,636,716,801.72
  5. Step 5: Solve for x
    x = 29,636,716,801.72/191,725.11
  6. Step 6: Final answer
    x = 154,579.21

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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.