Home / 153,964.13-212,458.38-85,975.79

Finding the Fourth Proportional to 153,964.13, 212,458.38 and 85,975.79

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Solution

The fourth proportional to 153,964.13, 212,458.38 and 85,975.79 is: 118,639.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,964.13 : 212,458.38 = 85,975.79 : x
  2. Step 2: Convert to fraction form
    153,964.13/212,458.38 = 85,975.79/x
  3. Step 3: Cross multiply
    153,964.13x = 212,458.38 × 85,975.79
  4. Step 4: Simplify right side
    153,964.13x = 18,266,277,062.62
  5. Step 5: Solve for x
    x = 18,266,277,062.62/153,964.13
  6. Step 6: Final answer
    x = 118,639.82

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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.