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Finding the Fourth Proportional to 111,228.57, 153,480.69 and 63,479.07

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Solution

The fourth proportional to 111,228.57, 153,480.69 and 63,479.07 is: 87,592.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,228.57 : 153,480.69 = 63,479.07 : x
  2. Step 2: Convert to fraction form
    111,228.57/153,480.69 = 63,479.07/x
  3. Step 3: Cross multiply
    111,228.57x = 153,480.69 × 63,479.07
  4. Step 4: Simplify right side
    111,228.57x = 9,742,811,464.16
  5. Step 5: Solve for x
    x = 9,742,811,464.16/111,228.57
  6. Step 6: Final answer
    x = 87,592.71

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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.