Home / 138,879,105.90-208,330,018.29-69,756,367.02

Finding the Fourth Proportional to 138,879,105.90, 208,330,018.29 and 69,756,367.02

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Solution

The fourth proportional to 138,879,105.90, 208,330,018.29 and 69,756,367.02 is: 104,640,256.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,879,105.90 : 208,330,018.29 = 69,756,367.02 : x
  2. Step 2: Convert to fraction form
    138,879,105.90/208,330,018.29 = 69,756,367.02/x
  3. Step 3: Cross multiply
    138,879,105.90x = 208,330,018.29 × 69,756,367.02
  4. Step 4: Simplify right side
    138,879,105.90x = 14,532,345,217,120,552
  5. Step 5: Solve for x
    x = 14,532,345,217,120,552/138,879,105.90
  6. Step 6: Final answer
    x = 104,640,256.16

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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.