Home / 157,396,971.70-235,779,270.14-78,375,411.70

Finding the Fourth Proportional to 157,396,971.70, 235,779,270.14 and 78,375,411.70

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Solution

The fourth proportional to 157,396,971.70, 235,779,270.14 and 78,375,411.70 is: 117,405,672.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,396,971.70 : 235,779,270.14 = 78,375,411.70 : x
  2. Step 2: Convert to fraction form
    157,396,971.70/235,779,270.14 = 78,375,411.70/x
  3. Step 3: Cross multiply
    157,396,971.70x = 235,779,270.14 × 78,375,411.70
  4. Step 4: Simplify right side
    157,396,971.70x = 18,479,297,367,625,028
  5. Step 5: Solve for x
    x = 18,479,297,367,625,028/157,396,971.70
  6. Step 6: Final answer
    x = 117,405,672.86

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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.