Home / 97,776.20-146,534.70-86,630.60

Finding the Fourth Proportional to 97,776.20, 146,534.70 and 86,630.60

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Solution

The fourth proportional to 97,776.20, 146,534.70 and 86,630.60 is: 129,831.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,776.20 : 146,534.70 = 86,630.60 : x
  2. Step 2: Convert to fraction form
    97,776.20/146,534.70 = 86,630.60/x
  3. Step 3: Cross multiply
    97,776.20x = 146,534.70 × 86,630.60
  4. Step 4: Simplify right side
    97,776.20x = 12,694,388,981.82
  5. Step 5: Solve for x
    x = 12,694,388,981.82/97,776.20
  6. Step 6: Final answer
    x = 129,831.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.