Home / 115,764.31-173,646.47-76,312.20

Finding the Fourth Proportional to 115,764.31, 173,646.47 and 76,312.20

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Solution

The fourth proportional to 115,764.31, 173,646.47 and 76,312.20 is: 114,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,764.31 : 173,646.47 = 76,312.20 : x
  2. Step 2: Convert to fraction form
    115,764.31/173,646.47 = 76,312.20/x
  3. Step 3: Cross multiply
    115,764.31x = 173,646.47 × 76,312.20
  4. Step 4: Simplify right side
    115,764.31x = 13,251,343,583.87
  5. Step 5: Solve for x
    x = 13,251,343,583.87/115,764.31
  6. Step 6: Final answer
    x = 114,468.30

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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.