Home / 136,455.96-188,309.58-79,106.40

Finding the Fourth Proportional to 136,455.96, 188,309.58 and 79,106.40

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Solution

The fourth proportional to 136,455.96, 188,309.58 and 79,106.40 is: 109,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,455.96 : 188,309.58 = 79,106.40 : x
  2. Step 2: Convert to fraction form
    136,455.96/188,309.58 = 79,106.40/x
  3. Step 3: Cross multiply
    136,455.96x = 188,309.58 × 79,106.40
  4. Step 4: Simplify right side
    136,455.96x = 14,896,492,959.31
  5. Step 5: Solve for x
    x = 14,896,492,959.31/136,455.96
  6. Step 6: Final answer
    x = 109,167.04

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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.