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Finding the Fourth Proportional to 195,980.40, 270,065.88 and 139,232.88

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Solution

The fourth proportional to 195,980.40, 270,065.88 and 139,232.88 is: 191,866.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,980.40 : 270,065.88 = 139,232.88 : x
  2. Step 2: Convert to fraction form
    195,980.40/270,065.88 = 139,232.88/x
  3. Step 3: Cross multiply
    195,980.40x = 270,065.88 × 139,232.88
  4. Step 4: Simplify right side
    195,980.40x = 37,602,050,262.13
  5. Step 5: Solve for x
    x = 37,602,050,262.13/195,980.40
  6. Step 6: Final answer
    x = 191,866.38

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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.