Home / 130,417.24-179,971.32-76,689.96

Finding the Fourth Proportional to 130,417.24, 179,971.32 and 76,689.96

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Solution

The fourth proportional to 130,417.24, 179,971.32 and 76,689.96 is: 105,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,417.24 : 179,971.32 = 76,689.96 : x
  2. Step 2: Convert to fraction form
    130,417.24/179,971.32 = 76,689.96/x
  3. Step 3: Cross multiply
    130,417.24x = 179,971.32 × 76,689.96
  4. Step 4: Simplify right side
    130,417.24x = 13,801,993,331.95
  5. Step 5: Solve for x
    x = 13,801,993,331.95/130,417.24
  6. Step 6: Final answer
    x = 105,829.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.