Home / 111,559.20-153,821.84-75,772.32

Finding the Fourth Proportional to 111,559.20, 153,821.84 and 75,772.32

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Solution

The fourth proportional to 111,559.20, 153,821.84 and 75,772.32 is: 104,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,559.20 : 153,821.84 = 75,772.32 : x
  2. Step 2: Convert to fraction form
    111,559.20/153,821.84 = 75,772.32/x
  3. Step 3: Cross multiply
    111,559.20x = 153,821.84 × 75,772.32
  4. Step 4: Simplify right side
    111,559.20x = 11,655,437,683.47
  5. Step 5: Solve for x
    x = 11,655,437,683.47/111,559.20
  6. Step 6: Final answer
    x = 104,477.60

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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.