Home / 138,232,543.10-207,348,814.65-83,990,131.70

Finding the Fourth Proportional to 138,232,543.10, 207,348,814.65 and 83,990,131.70

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Solution

The fourth proportional to 138,232,543.10, 207,348,814.65 and 83,990,131.70 is: 125,985,197.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,232,543.10 : 207,348,814.65 = 83,990,131.70 : x
  2. Step 2: Convert to fraction form
    138,232,543.10/207,348,814.65 = 83,990,131.70/x
  3. Step 3: Cross multiply
    138,232,543.10x = 207,348,814.65 × 83,990,131.70
  4. Step 4: Simplify right side
    138,232,543.10x = 17,415,254,250,292,390
  5. Step 5: Solve for x
    x = 17,415,254,250,292,390/138,232,543.10
  6. Step 6: Final answer
    x = 125,985,197.55

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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.