Home / 138,718,199.20-208,077,298.80-130,215,143.20

Finding the Fourth Proportional to 138,718,199.20, 208,077,298.80 and 130,215,143.20

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Solution

The fourth proportional to 138,718,199.20, 208,077,298.80 and 130,215,143.20 is: 195,322,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,718,199.20 : 208,077,298.80 = 130,215,143.20 : x
  2. Step 2: Convert to fraction form
    138,718,199.20/208,077,298.80 = 130,215,143.20/x
  3. Step 3: Cross multiply
    138,718,199.20x = 208,077,298.80 × 130,215,143.20
  4. Step 4: Simplify right side
    138,718,199.20x = 27,094,815,259,911,192
  5. Step 5: Solve for x
    x = 27,094,815,259,911,192/138,718,199.20
  6. Step 6: Final answer
    x = 195,322,714.80

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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.