Home / 212,817.45-319,156.71-70,624.53

Finding the Fourth Proportional to 212,817.45, 319,156.71 and 70,624.53

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Solution

The fourth proportional to 212,817.45, 319,156.71 and 70,624.53 is: 105,913.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,817.45 : 319,156.71 = 70,624.53 : x
  2. Step 2: Convert to fraction form
    212,817.45/319,156.71 = 70,624.53/x
  3. Step 3: Cross multiply
    212,817.45x = 319,156.71 × 70,624.53
  4. Step 4: Simplify right side
    212,817.45x = 22,540,292,640.10
  5. Step 5: Solve for x
    x = 22,540,292,640.10/212,817.45
  6. Step 6: Final answer
    x = 105,913.74

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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.