Home / 105,946.32-158,811.96-66,531.28

Finding the Fourth Proportional to 105,946.32, 158,811.96 and 66,531.28

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Solution

The fourth proportional to 105,946.32, 158,811.96 and 66,531.28 is: 99,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,946.32 : 158,811.96 = 66,531.28 : x
  2. Step 2: Convert to fraction form
    105,946.32/158,811.96 = 66,531.28/x
  3. Step 3: Cross multiply
    105,946.32x = 158,811.96 × 66,531.28
  4. Step 4: Simplify right side
    105,946.32x = 10,565,962,978.11
  5. Step 5: Solve for x
    x = 10,565,962,978.11/105,946.32
  6. Step 6: Final answer
    x = 99,729.40

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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.