Home / 137,632,620.78-189,933,006.06-74,909,168.46

Finding the Fourth Proportional to 137,632,620.78, 189,933,006.06 and 74,909,168.46

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Solution

The fourth proportional to 137,632,620.78, 189,933,006.06 and 74,909,168.46 is: 103,374,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,632,620.78 : 189,933,006.06 = 74,909,168.46 : x
  2. Step 2: Convert to fraction form
    137,632,620.78/189,933,006.06 = 74,909,168.46/x
  3. Step 3: Cross multiply
    137,632,620.78x = 189,933,006.06 × 74,909,168.46
  4. Step 4: Simplify right side
    137,632,620.78x = 14,227,723,547,062,740
  5. Step 5: Solve for x
    x = 14,227,723,547,062,740/137,632,620.78
  6. Step 6: Final answer
    x = 103,374,646.70

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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.