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Finding the Fourth Proportional to 134,572.86, 185,723.91 and 100,980.54

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Solution

The fourth proportional to 134,572.86, 185,723.91 and 100,980.54 is: 139,363.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,572.86 : 185,723.91 = 100,980.54 : x
  2. Step 2: Convert to fraction form
    134,572.86/185,723.91 = 100,980.54/x
  3. Step 3: Cross multiply
    134,572.86x = 185,723.91 × 100,980.54
  4. Step 4: Simplify right side
    134,572.86x = 18,754,500,722.71
  5. Step 5: Solve for x
    x = 18,754,500,722.71/134,572.86
  6. Step 6: Final answer
    x = 139,363.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.