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Finding the Fourth Proportional to 134,065.43, 185,013.48 and 72,814.07

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Solution

The fourth proportional to 134,065.43, 185,013.48 and 72,814.07 is: 100,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,065.43 : 185,013.48 = 72,814.07 : x
  2. Step 2: Convert to fraction form
    134,065.43/185,013.48 = 72,814.07/x
  3. Step 3: Cross multiply
    134,065.43x = 185,013.48 × 72,814.07
  4. Step 4: Simplify right side
    134,065.43x = 13,471,585,219.25
  5. Step 5: Solve for x
    x = 13,471,585,219.25/134,065.43
  6. Step 6: Final answer
    x = 100,485.15

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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.