Home / 100,307,953.89-138,440,106.90-61,172,432.55

Finding the Fourth Proportional to 100,307,953.89, 138,440,106.90 and 61,172,432.55

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Solution

The fourth proportional to 100,307,953.89, 138,440,106.90 and 61,172,432.55 is: 84,427,184.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,307,953.89 : 138,440,106.90 = 61,172,432.55 : x
  2. Step 2: Convert to fraction form
    100,307,953.89/138,440,106.90 = 61,172,432.55/x
  3. Step 3: Cross multiply
    100,307,953.89x = 138,440,106.90 × 61,172,432.55
  4. Step 4: Simplify right side
    100,307,953.89x = 8,468,718,101,555,040
  5. Step 5: Solve for x
    x = 8,468,718,101,555,040/100,307,953.89
  6. Step 6: Final answer
    x = 84,427,184.22

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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.