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Finding the Fourth Proportional to 136,613.74, 205,048.59 and 84,125.74

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Solution

The fourth proportional to 136,613.74, 205,048.59 and 84,125.74 is: 126,267.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,613.74 : 205,048.59 = 84,125.74 : x
  2. Step 2: Convert to fraction form
    136,613.74/205,048.59 = 84,125.74/x
  3. Step 3: Cross multiply
    136,613.74x = 205,048.59 × 84,125.74
  4. Step 4: Simplify right side
    136,613.74x = 17,249,864,369.71
  5. Step 5: Solve for x
    x = 17,249,864,369.71/136,613.74
  6. Step 6: Final answer
    x = 126,267.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.