Home / 136,119.04-187,844.88-79,518.40

Finding the Fourth Proportional to 136,119.04, 187,844.88 and 79,518.40

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Solution

The fourth proportional to 136,119.04, 187,844.88 and 79,518.40 is: 109,735.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,119.04 : 187,844.88 = 79,518.40 : x
  2. Step 2: Convert to fraction form
    136,119.04/187,844.88 = 79,518.40/x
  3. Step 3: Cross multiply
    136,119.04x = 187,844.88 × 79,518.40
  4. Step 4: Simplify right side
    136,119.04x = 14,937,124,305.79
  5. Step 5: Solve for x
    x = 14,937,124,305.79/136,119.04
  6. Step 6: Final answer
    x = 109,735.75

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1.5x scale

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.