Home / 154,375.88-213,023.93-86,389.34

Finding the Fourth Proportional to 154,375.88, 213,023.93 and 86,389.34

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Solution

The fourth proportional to 154,375.88, 213,023.93 and 86,389.34 is: 119,209.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,375.88 : 213,023.93 = 86,389.34 : x
  2. Step 2: Convert to fraction form
    154,375.88/213,023.93 = 86,389.34/x
  3. Step 3: Cross multiply
    154,375.88x = 213,023.93 × 86,389.34
  4. Step 4: Simplify right side
    154,375.88x = 18,402,995,219.84
  5. Step 5: Solve for x
    x = 18,402,995,219.84/154,375.88
  6. Step 6: Final answer
    x = 119,209.01

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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.