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Finding the Fourth Proportional to 145,765.52, 218,508.84 and 56,989.52

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Solution

The fourth proportional to 145,765.52, 218,508.84 and 56,989.52 is: 85,429.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,765.52 : 218,508.84 = 56,989.52 : x
  2. Step 2: Convert to fraction form
    145,765.52/218,508.84 = 56,989.52/x
  3. Step 3: Cross multiply
    145,765.52x = 218,508.84 × 56,989.52
  4. Step 4: Simplify right side
    145,765.52x = 12,452,713,907.36
  5. Step 5: Solve for x
    x = 12,452,713,907.36/145,765.52
  6. Step 6: Final answer
    x = 85,429.76

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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.