Home / 145,673.12-218,379.36-56,905.76

Finding the Fourth Proportional to 145,673.12, 218,379.36 and 56,905.76

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Solution

The fourth proportional to 145,673.12, 218,379.36 and 56,905.76 is: 85,307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,673.12 : 218,379.36 = 56,905.76 : x
  2. Step 2: Convert to fraction form
    145,673.12/218,379.36 = 56,905.76/x
  3. Step 3: Cross multiply
    145,673.12x = 218,379.36 × 56,905.76
  4. Step 4: Simplify right side
    145,673.12x = 12,427,043,449.11
  5. Step 5: Solve for x
    x = 12,427,043,449.11/145,673.12
  6. Step 6: Final answer
    x = 85,307.73

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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.