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Finding the Fourth Proportional to 145,369.68, 218,054.52 and 45,530.70

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Solution

The fourth proportional to 145,369.68, 218,054.52 and 45,530.70 is: 68,296.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,369.68 : 218,054.52 = 45,530.70 : x
  2. Step 2: Convert to fraction form
    145,369.68/218,054.52 = 45,530.70/x
  3. Step 3: Cross multiply
    145,369.68x = 218,054.52 × 45,530.70
  4. Step 4: Simplify right side
    145,369.68x = 9,928,174,933.76
  5. Step 5: Solve for x
    x = 9,928,174,933.76/145,369.68
  6. Step 6: Final answer
    x = 68,296.05

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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.