Home / 153,521.20-230,065.80-121,985.20

Finding the Fourth Proportional to 153,521.20, 230,065.80 and 121,985.20

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Solution

The fourth proportional to 153,521.20, 230,065.80 and 121,985.20 is: 182,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,521.20 : 230,065.80 = 121,985.20 : x
  2. Step 2: Convert to fraction form
    153,521.20/230,065.80 = 121,985.20/x
  3. Step 3: Cross multiply
    153,521.20x = 230,065.80 × 121,985.20
  4. Step 4: Simplify right side
    153,521.20x = 28,064,622,626.16
  5. Step 5: Solve for x
    x = 28,064,622,626.16/153,521.20
  6. Step 6: Final answer
    x = 182,806.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.