Home / 111,721.90-154,124.85-98,988.07

Finding the Fourth Proportional to 111,721.90, 154,124.85 and 98,988.07

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Solution

The fourth proportional to 111,721.90, 154,124.85 and 98,988.07 is: 136,558.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,721.90 : 154,124.85 = 98,988.07 : x
  2. Step 2: Convert to fraction form
    111,721.90/154,124.85 = 98,988.07/x
  3. Step 3: Cross multiply
    111,721.90x = 154,124.85 × 98,988.07
  4. Step 4: Simplify right side
    111,721.90x = 15,256,521,440.54
  5. Step 5: Solve for x
    x = 15,256,521,440.54/111,721.90
  6. Step 6: Final answer
    x = 136,558.02

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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.