Home / 149,853.04-206,803.12-86,190.72

Finding the Fourth Proportional to 149,853.04, 206,803.12 and 86,190.72

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Solution

The fourth proportional to 149,853.04, 206,803.12 and 86,190.72 is: 118,946.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,853.04 : 206,803.12 = 86,190.72 : x
  2. Step 2: Convert to fraction form
    149,853.04/206,803.12 = 86,190.72/x
  3. Step 3: Cross multiply
    149,853.04x = 206,803.12 × 86,190.72
  4. Step 4: Simplify right side
    149,853.04x = 17,824,509,811.05
  5. Step 5: Solve for x
    x = 17,824,509,811.05/149,853.04
  6. Step 6: Final answer
    x = 118,946.60

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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.