Home / 86,918.66-130,157.45-72,841.67

Finding the Fourth Proportional to 86,918.66, 130,157.45 and 72,841.67

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Solution

The fourth proportional to 86,918.66, 130,157.45 and 72,841.67 is: 109,077.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,918.66 : 130,157.45 = 72,841.67 : x
  2. Step 2: Convert to fraction form
    86,918.66/130,157.45 = 72,841.67/x
  3. Step 3: Cross multiply
    86,918.66x = 130,157.45 × 72,841.67
  4. Step 4: Simplify right side
    86,918.66x = 9,480,885,005.95
  5. Step 5: Solve for x
    x = 9,480,885,005.95/86,918.66
  6. Step 6: Final answer
    x = 109,077.68

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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.