Home / 145,060,760.30-200,181,971.44-78,980,500.63

Finding the Fourth Proportional to 145,060,760.30, 200,181,971.44 and 78,980,500.63

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Solution

The fourth proportional to 145,060,760.30, 200,181,971.44 and 78,980,500.63 is: 108,992,068.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,060,760.30 : 200,181,971.44 = 78,980,500.63 : x
  2. Step 2: Convert to fraction form
    145,060,760.30/200,181,971.44 = 78,980,500.63/x
  3. Step 3: Cross multiply
    145,060,760.30x = 200,181,971.44 × 78,980,500.63
  4. Step 4: Simplify right side
    145,060,760.30x = 15,810,472,321,431,560
  5. Step 5: Solve for x
    x = 15,810,472,321,431,560/145,060,760.30
  6. Step 6: Final answer
    x = 108,992,068.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.