Home / 120,608,816.58-180,841,316.31-81,794,990.34

Finding the Fourth Proportional to 120,608,816.58, 180,841,316.31 and 81,794,990.34

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Solution

The fourth proportional to 120,608,816.58, 180,841,316.31 and 81,794,990.34 is: 122,643,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,608,816.58 : 180,841,316.31 = 81,794,990.34 : x
  2. Step 2: Convert to fraction form
    120,608,816.58/180,841,316.31 = 81,794,990.34/x
  3. Step 3: Cross multiply
    120,608,816.58x = 180,841,316.31 × 81,794,990.34
  4. Step 4: Simplify right side
    120,608,816.58x = 14,791,913,720,649,336
  5. Step 5: Solve for x
    x = 14,791,913,720,649,336/120,608,816.58
  6. Step 6: Final answer
    x = 122,643,718.26

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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.