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Finding the Fourth Proportional to 134,708.16, 185,875.20 and 80,980.32

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Solution

The fourth proportional to 134,708.16, 185,875.20 and 80,980.32 is: 111,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,708.16 : 185,875.20 = 80,980.32 : x
  2. Step 2: Convert to fraction form
    134,708.16/185,875.20 = 80,980.32/x
  3. Step 3: Cross multiply
    134,708.16x = 185,875.20 × 80,980.32
  4. Step 4: Simplify right side
    134,708.16x = 15,052,233,176.06
  5. Step 5: Solve for x
    x = 15,052,233,176.06/134,708.16
  6. Step 6: Final answer
    x = 111,739.58

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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.