Home / 158,541.57-218,801.12-86,935.55

Finding the Fourth Proportional to 158,541.57, 218,801.12 and 86,935.55

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Solution

The fourth proportional to 158,541.57, 218,801.12 and 86,935.55 is: 119,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,541.57 : 218,801.12 = 86,935.55 : x
  2. Step 2: Convert to fraction form
    158,541.57/218,801.12 = 86,935.55/x
  3. Step 3: Cross multiply
    158,541.57x = 218,801.12 × 86,935.55
  4. Step 4: Simplify right side
    158,541.57x = 19,021,594,179.13
  5. Step 5: Solve for x
    x = 19,021,594,179.13/158,541.57
  6. Step 6: Final answer
    x = 119,978.59

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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.