Home / 12,116,987.84-18,158,810.45-5,192,178.57

Finding the Fourth Proportional to 12,116,987.84, 18,158,810.45 and 5,192,178.57

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Solution

The fourth proportional to 12,116,987.84, 18,158,810.45 and 5,192,178.57 is: 7,781,124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116,987.84 : 18,158,810.45 = 5,192,178.57 : x
  2. Step 2: Convert to fraction form
    12,116,987.84/18,158,810.45 = 5,192,178.57/x
  3. Step 3: Cross multiply
    12,116,987.84x = 18,158,810.45 × 5,192,178.57
  4. Step 4: Simplify right side
    12,116,987.84x = 94,283,786,449,221.17
  5. Step 5: Solve for x
    x = 94,283,786,449,221.17/12,116,987.84
  6. Step 6: Final answer
    x = 7,781,124.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.