Home / 111,823.20-154,315.80-64,076.40

Finding the Fourth Proportional to 111,823.20, 154,315.80 and 64,076.40

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Solution

The fourth proportional to 111,823.20, 154,315.80 and 64,076.40 is: 88,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,823.20 : 154,315.80 = 64,076.40 : x
  2. Step 2: Convert to fraction form
    111,823.20/154,315.80 = 64,076.40/x
  3. Step 3: Cross multiply
    111,823.20x = 154,315.80 × 64,076.40
  4. Step 4: Simplify right side
    111,823.20x = 9,888,000,927.12
  5. Step 5: Solve for x
    x = 9,888,000,927.12/111,823.20
  6. Step 6: Final answer
    x = 88,425.31

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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.