Home / 139,440.40-192,368.46-85,708.24

Finding the Fourth Proportional to 139,440.40, 192,368.46 and 85,708.24

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Solution

The fourth proportional to 139,440.40, 192,368.46 and 85,708.24 is: 118,240.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,440.40 : 192,368.46 = 85,708.24 : x
  2. Step 2: Convert to fraction form
    139,440.40/192,368.46 = 85,708.24/x
  3. Step 3: Cross multiply
    139,440.40x = 192,368.46 × 85,708.24
  4. Step 4: Simplify right side
    139,440.40x = 16,487,562,138.11
  5. Step 5: Solve for x
    x = 16,487,562,138.11/139,440.40
  6. Step 6: Final answer
    x = 118,240.93

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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.