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Finding the Fourth Proportional to 126,378.76, 189,566.16 and 37,632.76

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Solution

The fourth proportional to 126,378.76, 189,566.16 and 37,632.76 is: 56,448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,378.76 : 189,566.16 = 37,632.76 : x
  2. Step 2: Convert to fraction form
    126,378.76/189,566.16 = 37,632.76/x
  3. Step 3: Cross multiply
    126,378.76x = 189,566.16 × 37,632.76
  4. Step 4: Simplify right side
    126,378.76x = 7,133,897,803.40
  5. Step 5: Solve for x
    x = 7,133,897,803.40/126,378.76
  6. Step 6: Final answer
    x = 56,448.55

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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.