Home / 136,313.43-188,130.20-78,192.82

Finding the Fourth Proportional to 136,313.43, 188,130.20 and 78,192.82

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Solution

The fourth proportional to 136,313.43, 188,130.20 and 78,192.82 is: 107,916.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,313.43 : 188,130.20 = 78,192.82 : x
  2. Step 2: Convert to fraction form
    136,313.43/188,130.20 = 78,192.82/x
  3. Step 3: Cross multiply
    136,313.43x = 188,130.20 × 78,192.82
  4. Step 4: Simplify right side
    136,313.43x = 14,710,430,709.36
  5. Step 5: Solve for x
    x = 14,710,430,709.36/136,313.43
  6. Step 6: Final answer
    x = 107,916.23

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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.