Home / 189,171,845.28-261,057,308.94-105,539,988.83

Finding the Fourth Proportional to 189,171,845.28, 261,057,308.94 and 105,539,988.83

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Solution

The fourth proportional to 189,171,845.28, 261,057,308.94 and 105,539,988.83 is: 145,645,275.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,171,845.28 : 261,057,308.94 = 105,539,988.83 : x
  2. Step 2: Convert to fraction form
    189,171,845.28/261,057,308.94 = 105,539,988.83/x
  3. Step 3: Cross multiply
    189,171,845.28x = 261,057,308.94 × 105,539,988.83
  4. Step 4: Simplify right side
    189,171,845.28x = 27,551,985,468,212,172
  5. Step 5: Solve for x
    x = 27,551,985,468,212,172/189,171,845.28
  6. Step 6: Final answer
    x = 145,645,275.21

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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.