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Finding the Fourth Proportional to 145,406.98, 218,110.56 and 45,574.96

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Solution

The fourth proportional to 145,406.98, 218,110.56 and 45,574.96 is: 68,362.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,406.98 : 218,110.56 = 45,574.96 : x
  2. Step 2: Convert to fraction form
    145,406.98/218,110.56 = 45,574.96/x
  3. Step 3: Cross multiply
    145,406.98x = 218,110.56 × 45,574.96
  4. Step 4: Simplify right side
    145,406.98x = 9,940,380,047.58
  5. Step 5: Solve for x
    x = 9,940,380,047.58/145,406.98
  6. Step 6: Final answer
    x = 68,362.47

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1.5x scale

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.