Home / 158,688.32-238,071.86-78,763.80

Finding the Fourth Proportional to 158,688.32, 238,071.86 and 78,763.80

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Solution

The fourth proportional to 158,688.32, 238,071.86 and 78,763.80 is: 118,165.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,688.32 : 238,071.86 = 78,763.80 : x
  2. Step 2: Convert to fraction form
    158,688.32/238,071.86 = 78,763.80/x
  3. Step 3: Cross multiply
    158,688.32x = 238,071.86 × 78,763.80
  4. Step 4: Simplify right side
    158,688.32x = 18,751,443,972.85
  5. Step 5: Solve for x
    x = 18,751,443,972.85/158,688.32
  6. Step 6: Final answer
    x = 118,165.25

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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.