Home / 161,538.44-242,411.34-78,387.08

Finding the Fourth Proportional to 161,538.44, 242,411.34 and 78,387.08

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Solution

The fourth proportional to 161,538.44, 242,411.34 and 78,387.08 is: 117,630.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,538.44 : 242,411.34 = 78,387.08 : x
  2. Step 2: Convert to fraction form
    161,538.44/242,411.34 = 78,387.08/x
  3. Step 3: Cross multiply
    161,538.44x = 242,411.34 × 78,387.08
  4. Step 4: Simplify right side
    161,538.44x = 19,001,917,101.49
  5. Step 5: Solve for x
    x = 19,001,917,101.49/161,538.44
  6. Step 6: Final answer
    x = 117,630.93

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1.5x scale

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.