Home / 154,401.57-213,025.59-86,407.74

Finding the Fourth Proportional to 154,401.57, 213,025.59 and 86,407.74

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Solution

The fourth proportional to 154,401.57, 213,025.59 and 86,407.74 is: 119,215.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,401.57 : 213,025.59 = 86,407.74 : x
  2. Step 2: Convert to fraction form
    154,401.57/213,025.59 = 86,407.74/x
  3. Step 3: Cross multiply
    154,401.57x = 213,025.59 × 86,407.74
  4. Step 4: Simplify right side
    154,401.57x = 18,407,058,728.94
  5. Step 5: Solve for x
    x = 18,407,058,728.94/154,401.57
  6. Step 6: Final answer
    x = 119,215.49

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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.