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Finding the Fourth Proportional to 145,398.42, 218,101.95 and 56,672.10

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Solution

The fourth proportional to 145,398.42, 218,101.95 and 56,672.10 is: 85,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,398.42 : 218,101.95 = 56,672.10 : x
  2. Step 2: Convert to fraction form
    145,398.42/218,101.95 = 56,672.10/x
  3. Step 3: Cross multiply
    145,398.42x = 218,101.95 × 56,672.10
  4. Step 4: Simplify right side
    145,398.42x = 12,360,295,520.60
  5. Step 5: Solve for x
    x = 12,360,295,520.60/145,398.42
  6. Step 6: Final answer
    x = 85,009.83

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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.