Home / 138,785,047.20-208,028,271.60-52,490,109.60

Finding the Fourth Proportional to 138,785,047.20, 208,028,271.60 and 52,490,109.60

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Solution

The fourth proportional to 138,785,047.20, 208,028,271.60 and 52,490,109.60 is: 78,678,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,785,047.20 : 208,028,271.60 = 52,490,109.60 : x
  2. Step 2: Convert to fraction form
    138,785,047.20/208,028,271.60 = 52,490,109.60/x
  3. Step 3: Cross multiply
    138,785,047.20x = 208,028,271.60 × 52,490,109.60
  4. Step 4: Simplify right side
    138,785,047.20x = 10,919,426,776,182,568
  5. Step 5: Solve for x
    x = 10,919,426,776,182,568/138,785,047.20
  6. Step 6: Final answer
    x = 78,678,697.72

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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.