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Finding the Fourth Proportional to 145,358.62, 218,037.93 and 45,526.63

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Solution

The fourth proportional to 145,358.62, 218,037.93 and 45,526.63 is: 68,289.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,358.62 : 218,037.93 = 45,526.63 : x
  2. Step 2: Convert to fraction form
    145,358.62/218,037.93 = 45,526.63/x
  3. Step 3: Cross multiply
    145,358.62x = 218,037.93 × 45,526.63
  4. Step 4: Simplify right side
    145,358.62x = 9,926,531,790.71
  5. Step 5: Solve for x
    x = 9,926,531,790.71/145,358.62
  6. Step 6: Final answer
    x = 68,289.94

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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.