Home / 212,702.49-319,178.30-118,011.89

Finding the Fourth Proportional to 212,702.49, 319,178.30 and 118,011.89

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Solution

The fourth proportional to 212,702.49, 319,178.30 and 118,011.89 is: 177,086.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,702.49 : 319,178.30 = 118,011.89 : x
  2. Step 2: Convert to fraction form
    212,702.49/319,178.30 = 118,011.89/x
  3. Step 3: Cross multiply
    212,702.49x = 319,178.30 × 118,011.89
  4. Step 4: Simplify right side
    212,702.49x = 37,666,833,174.40
  5. Step 5: Solve for x
    x = 37,666,833,174.40/212,702.49
  6. Step 6: Final answer
    x = 177,086.94

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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.