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Finding the Fourth Proportional to 145,374.80, 218,062.20 and 145,374.80

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Solution

The fourth proportional to 145,374.80, 218,062.20 and 145,374.80 is: 218,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,374.80 : 218,062.20 = 145,374.80 : x
  2. Step 2: Convert to fraction form
    145,374.80/218,062.20 = 145,374.80/x
  3. Step 3: Cross multiply
    145,374.80x = 218,062.20 × 145,374.80
  4. Step 4: Simplify right side
    145,374.80x = 31,700,748,712.56
  5. Step 5: Solve for x
    x = 31,700,748,712.56/145,374.80
  6. Step 6: Final answer
    x = 218,062.20

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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.