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Finding the Fourth Proportional to 139,370.40, 208,002.38 and 125,918.32

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Solution

The fourth proportional to 139,370.40, 208,002.38 and 125,918.32 is: 187,925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,370.40 : 208,002.38 = 125,918.32 : x
  2. Step 2: Convert to fraction form
    139,370.40/208,002.38 = 125,918.32/x
  3. Step 3: Cross multiply
    139,370.40x = 208,002.38 × 125,918.32
  4. Step 4: Simplify right side
    139,370.40x = 26,191,310,245.60
  5. Step 5: Solve for x
    x = 26,191,310,245.60/139,370.40
  6. Step 6: Final answer
    x = 187,925.92

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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.