Home / 131,142,478.63-180,911,286.55-78,181,868.50

Finding the Fourth Proportional to 131,142,478.63, 180,911,286.55 and 78,181,868.50

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Solution

The fourth proportional to 131,142,478.63, 180,911,286.55 and 78,181,868.50 is: 107,852,029.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,142,478.63 : 180,911,286.55 = 78,181,868.50 : x
  2. Step 2: Convert to fraction form
    131,142,478.63/180,911,286.55 = 78,181,868.50/x
  3. Step 3: Cross multiply
    131,142,478.63x = 180,911,286.55 × 78,181,868.50
  4. Step 4: Simplify right side
    131,142,478.63x = 14,143,982,415,022,466
  5. Step 5: Solve for x
    x = 14,143,982,415,022,466/131,142,478.63
  6. Step 6: Final answer
    x = 107,852,029.05

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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.