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Finding the Fourth Proportional to 137,979,319.02, 206,968,978.74 and 56,079,008.88

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Solution

The fourth proportional to 137,979,319.02, 206,968,978.74 and 56,079,008.88 is: 84,118,513.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,979,319.02 : 206,968,978.74 = 56,079,008.88 : x
  2. Step 2: Convert to fraction form
    137,979,319.02/206,968,978.74 = 56,079,008.88/x
  3. Step 3: Cross multiply
    137,979,319.02x = 206,968,978.74 × 56,079,008.88
  4. Step 4: Simplify right side
    137,979,319.02x = 11,606,615,196,644,992
  5. Step 5: Solve for x
    x = 11,606,615,196,644,992/137,979,319.02
  6. Step 6: Final answer
    x = 84,118,513.41

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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.