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Finding the Fourth Proportional to 140,820.48, 211,230.54 and 56,580.54

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Solution

The fourth proportional to 140,820.48, 211,230.54 and 56,580.54 is: 84,870.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,820.48 : 211,230.54 = 56,580.54 : x
  2. Step 2: Convert to fraction form
    140,820.48/211,230.54 = 56,580.54/x
  3. Step 3: Cross multiply
    140,820.48x = 211,230.54 × 56,580.54
  4. Step 4: Simplify right side
    140,820.48x = 11,951,538,017.69
  5. Step 5: Solve for x
    x = 11,951,538,017.69/140,820.48
  6. Step 6: Final answer
    x = 84,870.74

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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.