Home / 111,888.64-154,407.36-61,587.84

Finding the Fourth Proportional to 111,888.64, 154,407.36 and 61,587.84

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Solution

The fourth proportional to 111,888.64, 154,407.36 and 61,587.84 is: 84,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,888.64 : 154,407.36 = 61,587.84 : x
  2. Step 2: Convert to fraction form
    111,888.64/154,407.36 = 61,587.84/x
  3. Step 3: Cross multiply
    111,888.64x = 154,407.36 × 61,587.84
  4. Step 4: Simplify right side
    111,888.64x = 9,509,615,782.50
  5. Step 5: Solve for x
    x = 9,509,615,782.50/111,888.64
  6. Step 6: Final answer
    x = 84,991.79

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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.