Home / 89,219.14-133,995.06-78,549.28

Finding the Fourth Proportional to 89,219.14, 133,995.06 and 78,549.28

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Solution

The fourth proportional to 89,219.14, 133,995.06 and 78,549.28 is: 117,970.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,219.14 : 133,995.06 = 78,549.28 : x
  2. Step 2: Convert to fraction form
    89,219.14/133,995.06 = 78,549.28/x
  3. Step 3: Cross multiply
    89,219.14x = 133,995.06 × 78,549.28
  4. Step 4: Simplify right side
    89,219.14x = 10,525,215,486.56
  5. Step 5: Solve for x
    x = 10,525,215,486.56/89,219.14
  6. Step 6: Final answer
    x = 117,970.38

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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.