Home / 158,623.84-218,900.40-90,661.90

Finding the Fourth Proportional to 158,623.84, 218,900.40 and 90,661.90

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Solution

The fourth proportional to 158,623.84, 218,900.40 and 90,661.90 is: 125,113.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,623.84 : 218,900.40 = 90,661.90 : x
  2. Step 2: Convert to fraction form
    158,623.84/218,900.40 = 90,661.90/x
  3. Step 3: Cross multiply
    158,623.84x = 218,900.40 × 90,661.90
  4. Step 4: Simplify right side
    158,623.84x = 19,845,926,174.76
  5. Step 5: Solve for x
    x = 19,845,926,174.76/158,623.84
  6. Step 6: Final answer
    x = 125,113.14

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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.