Home / 122,756,342.78-169,625,346.71-87,412,787.55

Finding the Fourth Proportional to 122,756,342.78, 169,625,346.71 and 87,412,787.55

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Solution

The fourth proportional to 122,756,342.78, 169,625,346.71 and 87,412,787.55 is: 120,787,440.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,756,342.78 : 169,625,346.71 = 87,412,787.55 : x
  2. Step 2: Convert to fraction form
    122,756,342.78/169,625,346.71 = 87,412,787.55/x
  3. Step 3: Cross multiply
    122,756,342.78x = 169,625,346.71 × 87,412,787.55
  4. Step 4: Simplify right side
    122,756,342.78x = 14,827,424,394,301,210
  5. Step 5: Solve for x
    x = 14,827,424,394,301,210/122,756,342.78
  6. Step 6: Final answer
    x = 120,787,440.05

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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.