Home / 111,228.07-153,480-63,478.57

Finding the Fourth Proportional to 111,228.07, 153,480 and 63,478.57

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Solution

The fourth proportional to 111,228.07, 153,480 and 63,478.57 is: 87,592.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,228.07 : 153,480 = 63,478.57 : x
  2. Step 2: Convert to fraction form
    111,228.07/153,480 = 63,478.57/x
  3. Step 3: Cross multiply
    111,228.07x = 153,480 × 63,478.57
  4. Step 4: Simplify right side
    111,228.07x = 9,742,690,923.60
  5. Step 5: Solve for x
    x = 9,742,690,923.60/111,228.07
  6. Step 6: Final answer
    x = 87,592.02

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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.