Home / 158,623.50-218,938.74-107,721.20

Finding the Fourth Proportional to 158,623.50, 218,938.74 and 107,721.20

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Solution

The fourth proportional to 158,623.50, 218,938.74 and 107,721.20 is: 148,681.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,623.50 : 218,938.74 = 107,721.20 : x
  2. Step 2: Convert to fraction form
    158,623.50/218,938.74 = 107,721.20/x
  3. Step 3: Cross multiply
    158,623.50x = 218,938.74 × 107,721.20
  4. Step 4: Simplify right side
    158,623.50x = 23,584,343,799.29
  5. Step 5: Solve for x
    x = 23,584,343,799.29/158,623.50
  6. Step 6: Final answer
    x = 148,681.27

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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.