Home / 120,662,643.12-181,049,628.63-55,103,878.35

Finding the Fourth Proportional to 120,662,643.12, 181,049,628.63 and 55,103,878.35

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Solution

The fourth proportional to 120,662,643.12, 181,049,628.63 and 55,103,878.35 is: 82,681,237.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,662,643.12 : 181,049,628.63 = 55,103,878.35 : x
  2. Step 2: Convert to fraction form
    120,662,643.12/181,049,628.63 = 55,103,878.35/x
  3. Step 3: Cross multiply
    120,662,643.12x = 181,049,628.63 × 55,103,878.35
  4. Step 4: Simplify right side
    120,662,643.12x = 9,976,536,711,340,198
  5. Step 5: Solve for x
    x = 9,976,536,711,340,198/120,662,643.12
  6. Step 6: Final answer
    x = 82,681,237.98

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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.