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Finding the Fourth Proportional to 139,330.98, 192,275.91 and 75,668.22

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Solution

The fourth proportional to 139,330.98, 192,275.91 and 75,668.22 is: 104,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,330.98 : 192,275.91 = 75,668.22 : x
  2. Step 2: Convert to fraction form
    139,330.98/192,275.91 = 75,668.22/x
  3. Step 3: Cross multiply
    139,330.98x = 192,275.91 × 75,668.22
  4. Step 4: Simplify right side
    139,330.98x = 14,549,175,858.58
  5. Step 5: Solve for x
    x = 14,549,175,858.58/139,330.98
  6. Step 6: Final answer
    x = 104,421.69

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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.