Home / 145,789.27-218,555.11-56,980.74

Finding the Fourth Proportional to 145,789.27, 218,555.11 and 56,980.74

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Solution

The fourth proportional to 145,789.27, 218,555.11 and 56,980.74 is: 85,420.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,789.27 : 218,555.11 = 56,980.74 : x
  2. Step 2: Convert to fraction form
    145,789.27/218,555.11 = 56,980.74/x
  3. Step 3: Cross multiply
    145,789.27x = 218,555.11 × 56,980.74
  4. Step 4: Simplify right side
    145,789.27x = 12,453,431,898.58
  5. Step 5: Solve for x
    x = 12,453,431,898.58/145,789.27
  6. Step 6: Final answer
    x = 85,420.77

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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.