Home / 139,127.40-191,921.76-84,696.12

Finding the Fourth Proportional to 139,127.40, 191,921.76 and 84,696.12

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Solution

The fourth proportional to 139,127.40, 191,921.76 and 84,696.12 is: 116,835.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,127.40 : 191,921.76 = 84,696.12 : x
  2. Step 2: Convert to fraction form
    139,127.40/191,921.76 = 84,696.12/x
  3. Step 3: Cross multiply
    139,127.40x = 191,921.76 × 84,696.12
  4. Step 4: Simplify right side
    139,127.40x = 16,255,028,415.57
  5. Step 5: Solve for x
    x = 16,255,028,415.57/139,127.40
  6. Step 6: Final answer
    x = 116,835.57

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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.