Home / 153,637.31-212,021.36-89,121.48

Finding the Fourth Proportional to 153,637.31, 212,021.36 and 89,121.48

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Solution

The fourth proportional to 153,637.31, 212,021.36 and 89,121.48 is: 122,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,637.31 : 212,021.36 = 89,121.48 : x
  2. Step 2: Convert to fraction form
    153,637.31/212,021.36 = 89,121.48/x
  3. Step 3: Cross multiply
    153,637.31x = 212,021.36 × 89,121.48
  4. Step 4: Simplify right side
    153,637.31x = 18,895,656,949.21
  5. Step 5: Solve for x
    x = 18,895,656,949.21/153,637.31
  6. Step 6: Final answer
    x = 122,988.73

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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.