Home / 236,398.24-326,237.78-128,974.16

Finding the Fourth Proportional to 236,398.24, 326,237.78 and 128,974.16

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Solution

The fourth proportional to 236,398.24, 326,237.78 and 128,974.16 is: 177,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,398.24 : 326,237.78 = 128,974.16 : x
  2. Step 2: Convert to fraction form
    236,398.24/326,237.78 = 128,974.16/x
  3. Step 3: Cross multiply
    236,398.24x = 326,237.78 × 128,974.16
  4. Step 4: Simplify right side
    236,398.24x = 42,076,243,635.76
  5. Step 5: Solve for x
    x = 42,076,243,635.76/236,398.24
  6. Step 6: Final answer
    x = 177,988.82

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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.