Home / 161,705,645.40-242,568,965.70-85,178,141.40

Finding the Fourth Proportional to 161,705,645.40, 242,568,965.70 and 85,178,141.40

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Solution

The fourth proportional to 161,705,645.40, 242,568,965.70 and 85,178,141.40 is: 127,772,741.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,705,645.40 : 242,568,965.70 = 85,178,141.40 : x
  2. Step 2: Convert to fraction form
    161,705,645.40/242,568,965.70 = 85,178,141.40/x
  3. Step 3: Cross multiply
    161,705,645.40x = 242,568,965.70 × 85,178,141.40
  4. Step 4: Simplify right side
    161,705,645.40x = 20,661,573,659,646,352
  5. Step 5: Solve for x
    x = 20,661,573,659,646,352/161,705,645.40
  6. Step 6: Final answer
    x = 127,772,741.69

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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.