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Finding the Fourth Proportional to 139,370.65, 208,002.76 and 125,918.57

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Solution

The fourth proportional to 139,370.65, 208,002.76 and 125,918.57 is: 187,926.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,370.65 : 208,002.76 = 125,918.57 : x
  2. Step 2: Convert to fraction form
    139,370.65/208,002.76 = 125,918.57/x
  3. Step 3: Cross multiply
    139,370.65x = 208,002.76 × 125,918.57
  4. Step 4: Simplify right side
    139,370.65x = 26,191,409,465.66
  5. Step 5: Solve for x
    x = 26,191,409,465.66/139,370.65
  6. Step 6: Final answer
    x = 187,926.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.