Home / 154,415.10-213,082.93-86,420.60

Finding the Fourth Proportional to 154,415.10, 213,082.93 and 86,420.60

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Solution

The fourth proportional to 154,415.10, 213,082.93 and 86,420.60 is: 119,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,415.10 : 213,082.93 = 86,420.60 : x
  2. Step 2: Convert to fraction form
    154,415.10/213,082.93 = 86,420.60/x
  3. Step 3: Cross multiply
    154,415.10x = 213,082.93 × 86,420.60
  4. Step 4: Simplify right side
    154,415.10x = 18,414,754,660.36
  5. Step 5: Solve for x
    x = 18,414,754,660.36/154,415.10
  6. Step 6: Final answer
    x = 119,254.88

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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.