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Finding the Fourth Proportional to 127,485.68, 191,228.32 and 38,738.80

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Solution

The fourth proportional to 127,485.68, 191,228.32 and 38,738.80 is: 58,108.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,485.68 : 191,228.32 = 38,738.80 : x
  2. Step 2: Convert to fraction form
    127,485.68/191,228.32 = 38,738.80/x
  3. Step 3: Cross multiply
    127,485.68x = 191,228.32 × 38,738.80
  4. Step 4: Simplify right side
    127,485.68x = 7,407,955,642.82
  5. Step 5: Solve for x
    x = 7,407,955,642.82/127,485.68
  6. Step 6: Final answer
    x = 58,108.14

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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.