Home / 154,920,663.88-213,791,914.02-85,308,512.20

Finding the Fourth Proportional to 154,920,663.88, 213,791,914.02 and 85,308,512.20

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Solution

The fourth proportional to 154,920,663.88, 213,791,914.02 and 85,308,512.20 is: 117,726,516.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,920,663.88 : 213,791,914.02 = 85,308,512.20 : x
  2. Step 2: Convert to fraction form
    154,920,663.88/213,791,914.02 = 85,308,512.20/x
  3. Step 3: Cross multiply
    154,920,663.88x = 213,791,914.02 × 85,308,512.20
  4. Step 4: Simplify right side
    154,920,663.88x = 18,238,270,105,436,524
  5. Step 5: Solve for x
    x = 18,238,270,105,436,524/154,920,663.88
  6. Step 6: Final answer
    x = 117,726,516.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.