Home / 161,705,649.40-242,568,971.70-85,178,145.40

Finding the Fourth Proportional to 161,705,649.40, 242,568,971.70 and 85,178,145.40

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Solution

The fourth proportional to 161,705,649.40, 242,568,971.70 and 85,178,145.40 is: 127,772,747.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,705,649.40 : 242,568,971.70 = 85,178,145.40 : x
  2. Step 2: Convert to fraction form
    161,705,649.40/242,568,971.70 = 85,178,145.40/x
  3. Step 3: Cross multiply
    161,705,649.40x = 242,568,971.70 × 85,178,145.40
  4. Step 4: Simplify right side
    161,705,649.40x = 20,661,575,140,991,084
  5. Step 5: Solve for x
    x = 20,661,575,140,991,084/161,705,649.40
  6. Step 6: Final answer
    x = 127,772,747.69

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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.