Home / 191,100-286,650.60-57,981.36

Finding the Fourth Proportional to 191,100, 286,650.60 and 57,981.36

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Solution

The fourth proportional to 191,100, 286,650.60 and 57,981.36 is: 86,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,100 : 286,650.60 = 57,981.36 : x
  2. Step 2: Convert to fraction form
    191,100/286,650.60 = 57,981.36/x
  3. Step 3: Cross multiply
    191,100x = 286,650.60 × 57,981.36
  4. Step 4: Simplify right side
    191,100x = 16,620,391,632.82
  5. Step 5: Solve for x
    x = 16,620,391,632.82/191,100
  6. Step 6: Final answer
    x = 86,972.22

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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.