Home / 102,731.75-141,860.12-64,557.66

Finding the Fourth Proportional to 102,731.75, 141,860.12 and 64,557.66

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Solution

The fourth proportional to 102,731.75, 141,860.12 and 64,557.66 is: 89,146.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,731.75 : 141,860.12 = 64,557.66 : x
  2. Step 2: Convert to fraction form
    102,731.75/141,860.12 = 64,557.66/x
  3. Step 3: Cross multiply
    102,731.75x = 141,860.12 × 64,557.66
  4. Step 4: Simplify right side
    102,731.75x = 9,158,157,394.52
  5. Step 5: Solve for x
    x = 9,158,157,394.52/102,731.75
  6. Step 6: Final answer
    x = 89,146.32

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1.5x scale

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.