Home / 129,679,634.94-179,011,137.42-87,920,894.94

Finding the Fourth Proportional to 129,679,634.94, 179,011,137.42 and 87,920,894.94

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Solution

The fourth proportional to 129,679,634.94, 179,011,137.42 and 87,920,894.94 is: 121,366,931.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,679,634.94 : 179,011,137.42 = 87,920,894.94 : x
  2. Step 2: Convert to fraction form
    129,679,634.94/179,011,137.42 = 87,920,894.94/x
  3. Step 3: Cross multiply
    129,679,634.94x = 179,011,137.42 × 87,920,894.94
  4. Step 4: Simplify right side
    129,679,634.94x = 15,738,819,406,193,722
  5. Step 5: Solve for x
    x = 15,738,819,406,193,722/129,679,634.94
  6. Step 6: Final answer
    x = 121,366,931.77

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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.