Home / 134,972.57-186,263.63-77,640.37

Finding the Fourth Proportional to 134,972.57, 186,263.63 and 77,640.37

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Solution

The fourth proportional to 134,972.57, 186,263.63 and 77,640.37 is: 107,144.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,972.57 : 186,263.63 = 77,640.37 : x
  2. Step 2: Convert to fraction form
    134,972.57/186,263.63 = 77,640.37/x
  3. Step 3: Cross multiply
    134,972.57x = 186,263.63 × 77,640.37
  4. Step 4: Simplify right side
    134,972.57x = 14,461,577,150.74
  5. Step 5: Solve for x
    x = 14,461,577,150.74/134,972.57
  6. Step 6: Final answer
    x = 107,144.56

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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.