Home / 136,737.36-188,707.04-76,319.79

Finding the Fourth Proportional to 136,737.36, 188,707.04 and 76,319.79

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Solution

The fourth proportional to 136,737.36, 188,707.04 and 76,319.79 is: 105,326.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,737.36 : 188,707.04 = 76,319.79 : x
  2. Step 2: Convert to fraction form
    136,737.36/188,707.04 = 76,319.79/x
  3. Step 3: Cross multiply
    136,737.36x = 188,707.04 × 76,319.79
  4. Step 4: Simplify right side
    136,737.36x = 14,402,081,282.72
  5. Step 5: Solve for x
    x = 14,402,081,282.72/136,737.36
  6. Step 6: Final answer
    x = 105,326.60

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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.