Home / 127,050.61-190,321.80-76,421.68

Finding the Fourth Proportional to 127,050.61, 190,321.80 and 76,421.68

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Solution

The fourth proportional to 127,050.61, 190,321.80 and 76,421.68 is: 114,479.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,050.61 : 190,321.80 = 76,421.68 : x
  2. Step 2: Convert to fraction form
    127,050.61/190,321.80 = 76,421.68/x
  3. Step 3: Cross multiply
    127,050.61x = 190,321.80 × 76,421.68
  4. Step 4: Simplify right side
    127,050.61x = 14,544,711,696.62
  5. Step 5: Solve for x
    x = 14,544,711,696.62/127,050.61
  6. Step 6: Final answer
    x = 114,479.67

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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.