Home / 212,536.89-318,854.52-72,295.50

Finding the Fourth Proportional to 212,536.89, 318,854.52 and 72,295.50

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Solution

The fourth proportional to 212,536.89, 318,854.52 and 72,295.50 is: 108,459.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,536.89 : 318,854.52 = 72,295.50 : x
  2. Step 2: Convert to fraction form
    212,536.89/318,854.52 = 72,295.50/x
  3. Step 3: Cross multiply
    212,536.89x = 318,854.52 × 72,295.50
  4. Step 4: Simplify right side
    212,536.89x = 23,051,746,950.66
  5. Step 5: Solve for x
    x = 23,051,746,950.66/212,536.89
  6. Step 6: Final answer
    x = 108,459.98

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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.