Home / 131,578,909.28-181,571,701.15-72,028,685.37

Finding the Fourth Proportional to 131,578,909.28, 181,571,701.15 and 72,028,685.37

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Solution

The fourth proportional to 131,578,909.28, 181,571,701.15 and 72,028,685.37 is: 99,395,647.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,578,909.28 : 181,571,701.15 = 72,028,685.37 : x
  2. Step 2: Convert to fraction form
    131,578,909.28/181,571,701.15 = 72,028,685.37/x
  3. Step 3: Cross multiply
    131,578,909.28x = 181,571,701.15 × 72,028,685.37
  4. Step 4: Simplify right side
    131,578,909.28x = 13,078,370,934,229,018
  5. Step 5: Solve for x
    x = 13,078,370,934,229,018/131,578,909.28
  6. Step 6: Final answer
    x = 99,395,647.87

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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.