Home / 100,072,292.20-138,102,647.56-56,019,031.79

Finding the Fourth Proportional to 100,072,292.20, 138,102,647.56 and 56,019,031.79

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Solution

The fourth proportional to 100,072,292.20, 138,102,647.56 and 56,019,031.79 is: 77,307,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,072,292.20 : 138,102,647.56 = 56,019,031.79 : x
  2. Step 2: Convert to fraction form
    100,072,292.20/138,102,647.56 = 56,019,031.79/x
  3. Step 3: Cross multiply
    100,072,292.20x = 138,102,647.56 × 56,019,031.79
  4. Step 4: Simplify right side
    100,072,292.20x = 7,736,376,603,116,245
  5. Step 5: Solve for x
    x = 7,736,376,603,116,245/100,072,292.20
  6. Step 6: Final answer
    x = 77,307,878.47

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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.