Home / 243,065.15-364,634.19-85,265.81

Finding the Fourth Proportional to 243,065.15, 364,634.19 and 85,265.81

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Solution

The fourth proportional to 243,065.15, 364,634.19 and 85,265.81 is: 127,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,065.15 : 364,634.19 = 85,265.81 : x
  2. Step 2: Convert to fraction form
    243,065.15/364,634.19 = 85,265.81/x
  3. Step 3: Cross multiply
    243,065.15x = 364,634.19 × 85,265.81
  4. Step 4: Simplify right side
    243,065.15x = 31,090,827,740.87
  5. Step 5: Solve for x
    x = 31,090,827,740.87/243,065.15
  6. Step 6: Final answer
    x = 127,911.50

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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.