Home / 155,900.93-215,141.94-84,280.32

Finding the Fourth Proportional to 155,900.93, 215,141.94 and 84,280.32

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Solution

The fourth proportional to 155,900.93, 215,141.94 and 84,280.32 is: 116,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,900.93 : 215,141.94 = 84,280.32 : x
  2. Step 2: Convert to fraction form
    155,900.93/215,141.94 = 84,280.32/x
  3. Step 3: Cross multiply
    155,900.93x = 215,141.94 × 84,280.32
  4. Step 4: Simplify right side
    155,900.93x = 18,132,231,548.62
  5. Step 5: Solve for x
    x = 18,132,231,548.62/155,900.93
  6. Step 6: Final answer
    x = 116,306.12

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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.