Home / 208,722,296.31-313,071,929.87-85,869,523.23

Finding the Fourth Proportional to 208,722,296.31, 313,071,929.87 and 85,869,523.23

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Solution

The fourth proportional to 208,722,296.31, 313,071,929.87 and 85,869,523.23 is: 128,799,547.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,722,296.31 : 313,071,929.87 = 85,869,523.23 : x
  2. Step 2: Convert to fraction form
    208,722,296.31/313,071,929.87 = 85,869,523.23/x
  3. Step 3: Cross multiply
    208,722,296.31x = 313,071,929.87 × 85,869,523.23
  4. Step 4: Simplify right side
    208,722,296.31x = 26,883,337,354,203,552
  5. Step 5: Solve for x
    x = 26,883,337,354,203,552/208,722,296.31
  6. Step 6: Final answer
    x = 128,799,547.67

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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.