Home / 90,320,375.16-134,798,006.79-81,603,435.96

Finding the Fourth Proportional to 90,320,375.16, 134,798,006.79 and 81,603,435.96

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Solution

The fourth proportional to 90,320,375.16, 134,798,006.79 and 81,603,435.96 is: 121,788,472.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,320,375.16 : 134,798,006.79 = 81,603,435.96 : x
  2. Step 2: Convert to fraction form
    90,320,375.16/134,798,006.79 = 81,603,435.96/x
  3. Step 3: Cross multiply
    90,320,375.16x = 134,798,006.79 × 81,603,435.96
  4. Step 4: Simplify right side
    90,320,375.16x = 10,999,980,514,623,408
  5. Step 5: Solve for x
    x = 10,999,980,514,623,408/90,320,375.16
  6. Step 6: Final answer
    x = 121,788,472.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.