Home / 119,486.15-164,806.90-78,637.26

Finding the Fourth Proportional to 119,486.15, 164,806.90 and 78,637.26

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Solution

The fourth proportional to 119,486.15, 164,806.90 and 78,637.26 is: 108,464.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,486.15 : 164,806.90 = 78,637.26 : x
  2. Step 2: Convert to fraction form
    119,486.15/164,806.90 = 78,637.26/x
  3. Step 3: Cross multiply
    119,486.15x = 164,806.90 × 78,637.26
  4. Step 4: Simplify right side
    119,486.15x = 12,959,963,045.09
  5. Step 5: Solve for x
    x = 12,959,963,045.09/119,486.15
  6. Step 6: Final answer
    x = 108,464.14

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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.