Home / 158,047.49-236,821.55-128,320.09

Finding the Fourth Proportional to 158,047.49, 236,821.55 and 128,320.09

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Solution

The fourth proportional to 158,047.49, 236,821.55 and 128,320.09 is: 192,277.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,047.49 : 236,821.55 = 128,320.09 : x
  2. Step 2: Convert to fraction form
    158,047.49/236,821.55 = 128,320.09/x
  3. Step 3: Cross multiply
    158,047.49x = 236,821.55 × 128,320.09
  4. Step 4: Simplify right side
    158,047.49x = 30,388,961,746.63
  5. Step 5: Solve for x
    x = 30,388,961,746.63/158,047.49
  6. Step 6: Final answer
    x = 192,277.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.