Home / 111,418.08-153,760.16-61,120.32

Finding the Fourth Proportional to 111,418.08, 153,760.16 and 61,120.32

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Solution

The fourth proportional to 111,418.08, 153,760.16 and 61,120.32 is: 84,347.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,418.08 : 153,760.16 = 61,120.32 : x
  2. Step 2: Convert to fraction form
    111,418.08/153,760.16 = 61,120.32/x
  3. Step 3: Cross multiply
    111,418.08x = 153,760.16 × 61,120.32
  4. Step 4: Simplify right side
    111,418.08x = 9,397,870,182.45
  5. Step 5: Solve for x
    x = 9,397,870,182.45/111,418.08
  6. Step 6: Final answer
    x = 84,347.80

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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.