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Finding the Fourth Proportional to 111,480.55, 153,970.92 and 73,410.29

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Solution

The fourth proportional to 111,480.55, 153,970.92 and 73,410.29 is: 101,390.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,480.55 : 153,970.92 = 73,410.29 : x
  2. Step 2: Convert to fraction form
    111,480.55/153,970.92 = 73,410.29/x
  3. Step 3: Cross multiply
    111,480.55x = 153,970.92 × 73,410.29
  4. Step 4: Simplify right side
    111,480.55x = 11,303,049,888.77
  5. Step 5: Solve for x
    x = 11,303,049,888.77/111,480.55
  6. Step 6: Final answer
    x = 101,390.34

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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.