Home / 129,527.37-178,724.07-72,165.24

Finding the Fourth Proportional to 129,527.37, 178,724.07 and 72,165.24

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Solution

The fourth proportional to 129,527.37, 178,724.07 and 72,165.24 is: 99,574.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,527.37 : 178,724.07 = 72,165.24 : x
  2. Step 2: Convert to fraction form
    129,527.37/178,724.07 = 72,165.24/x
  3. Step 3: Cross multiply
    129,527.37x = 178,724.07 × 72,165.24
  4. Step 4: Simplify right side
    129,527.37x = 12,897,665,405.33
  5. Step 5: Solve for x
    x = 12,897,665,405.33/129,527.37
  6. Step 6: Final answer
    x = 99,574.83

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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.