Home / 129,740.86-178,883.32-106,690.13

Finding the Fourth Proportional to 129,740.86, 178,883.32 and 106,690.13

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Solution

The fourth proportional to 129,740.86, 178,883.32 and 106,690.13 is: 147,101.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740.86 : 178,883.32 = 106,690.13 : x
  2. Step 2: Convert to fraction form
    129,740.86/178,883.32 = 106,690.13/x
  3. Step 3: Cross multiply
    129,740.86x = 178,883.32 × 106,690.13
  4. Step 4: Simplify right side
    129,740.86x = 19,085,083,368.35
  5. Step 5: Solve for x
    x = 19,085,083,368.35/129,740.86
  6. Step 6: Final answer
    x = 147,101.57

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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.