Home / 212,870,003.90-319,305,005.85-76,537,672.70

Finding the Fourth Proportional to 212,870,003.90, 319,305,005.85 and 76,537,672.70

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Solution

The fourth proportional to 212,870,003.90, 319,305,005.85 and 76,537,672.70 is: 114,806,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,870,003.90 : 319,305,005.85 = 76,537,672.70 : x
  2. Step 2: Convert to fraction form
    212,870,003.90/319,305,005.85 = 76,537,672.70/x
  3. Step 3: Cross multiply
    212,870,003.90x = 319,305,005.85 × 76,537,672.70
  4. Step 4: Simplify right side
    212,870,003.90x = 24,438,862,029,218,888
  5. Step 5: Solve for x
    x = 24,438,862,029,218,888/212,870,003.90
  6. Step 6: Final answer
    x = 114,806,509.05

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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.