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Finding the Fourth Proportional to 145,518.76, 218,278.19 and 65,463.21

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Solution

The fourth proportional to 145,518.76, 218,278.19 and 65,463.21 is: 98,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,518.76 : 218,278.19 = 65,463.21 : x
  2. Step 2: Convert to fraction form
    145,518.76/218,278.19 = 65,463.21/x
  3. Step 3: Cross multiply
    145,518.76x = 218,278.19 × 65,463.21
  4. Step 4: Simplify right side
    145,518.76x = 14,289,191,767.96
  5. Step 5: Solve for x
    x = 14,289,191,767.96/145,518.76
  6. Step 6: Final answer
    x = 98,194.85

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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.