Home / 154,313.85-212,972.73-86,334.60

Finding the Fourth Proportional to 154,313.85, 212,972.73 and 86,334.60

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Solution

The fourth proportional to 154,313.85, 212,972.73 and 86,334.60 is: 119,152.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,313.85 : 212,972.73 = 86,334.60 : x
  2. Step 2: Convert to fraction form
    154,313.85/212,972.73 = 86,334.60/x
  3. Step 3: Cross multiply
    154,313.85x = 212,972.73 × 86,334.60
  4. Step 4: Simplify right side
    154,313.85x = 18,386,915,455.46
  5. Step 5: Solve for x
    x = 18,386,915,455.46/154,313.85
  6. Step 6: Final answer
    x = 119,152.72

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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.