Home / 128,723.86-193,111.80-44,487.10

Finding the Fourth Proportional to 128,723.86, 193,111.80 and 44,487.10

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Solution

The fourth proportional to 128,723.86, 193,111.80 and 44,487.10 is: 66,739.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,723.86 : 193,111.80 = 44,487.10 : x
  2. Step 2: Convert to fraction form
    128,723.86/193,111.80 = 44,487.10/x
  3. Step 3: Cross multiply
    128,723.86x = 193,111.80 × 44,487.10
  4. Step 4: Simplify right side
    128,723.86x = 8,590,983,957.78
  5. Step 5: Solve for x
    x = 8,590,983,957.78/128,723.86
  6. Step 6: Final answer
    x = 66,739.64

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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.