Home / 208,405,182.97-312,703,237.95-90,266,077.72

Finding the Fourth Proportional to 208,405,182.97, 312,703,237.95 and 90,266,077.72

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Solution

The fourth proportional to 208,405,182.97, 312,703,237.95 and 90,266,077.72 is: 135,440,464.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,405,182.97 : 312,703,237.95 = 90,266,077.72 : x
  2. Step 2: Convert to fraction form
    208,405,182.97/312,703,237.95 = 90,266,077.72/x
  3. Step 3: Cross multiply
    208,405,182.97x = 312,703,237.95 × 90,266,077.72
  4. Step 4: Simplify right side
    208,405,182.97x = 28,226,494,780,090,352
  5. Step 5: Solve for x
    x = 28,226,494,780,090,352/208,405,182.97
  6. Step 6: Final answer
    x = 135,440,464.47

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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.