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Finding the Fourth Proportional to 112,362.32, 154,912.36 and 86,549.92

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Solution

The fourth proportional to 112,362.32, 154,912.36 and 86,549.92 is: 119,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,362.32 : 154,912.36 = 86,549.92 : x
  2. Step 2: Convert to fraction form
    112,362.32/154,912.36 = 86,549.92/x
  3. Step 3: Cross multiply
    112,362.32x = 154,912.36 × 86,549.92
  4. Step 4: Simplify right side
    112,362.32x = 13,407,652,365.01
  5. Step 5: Solve for x
    x = 13,407,652,365.01/112,362.32
  6. Step 6: Final answer
    x = 119,325.16

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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.