Home / 129,718,842.88-179,006,656.98-77,536,648.66

Finding the Fourth Proportional to 129,718,842.88, 179,006,656.98 and 77,536,648.66

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Solution

The fourth proportional to 129,718,842.88, 179,006,656.98 and 77,536,648.66 is: 106,997,379.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,718,842.88 : 179,006,656.98 = 77,536,648.66 : x
  2. Step 2: Convert to fraction form
    129,718,842.88/179,006,656.98 = 77,536,648.66/x
  3. Step 3: Cross multiply
    129,718,842.88x = 179,006,656.98 × 77,536,648.66
  4. Step 4: Simplify right side
    129,718,842.88x = 13,879,576,270,059,396
  5. Step 5: Solve for x
    x = 13,879,576,270,059,396/129,718,842.88
  6. Step 6: Final answer
    x = 106,997,379.58

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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.