Home / 85,698.38-118,270.60-63,140.42

Finding the Fourth Proportional to 85,698.38, 118,270.60 and 63,140.42

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Solution

The fourth proportional to 85,698.38, 118,270.60 and 63,140.42 is: 87,138.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,698.38 : 118,270.60 = 63,140.42 : x
  2. Step 2: Convert to fraction form
    85,698.38/118,270.60 = 63,140.42/x
  3. Step 3: Cross multiply
    85,698.38x = 118,270.60 × 63,140.42
  4. Step 4: Simplify right side
    85,698.38x = 7,467,655,357.65
  5. Step 5: Solve for x
    x = 7,467,655,357.65/85,698.38
  6. Step 6: Final answer
    x = 87,138.82

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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.