Home / 121,521.36-182,238.30-51,405.60

Finding the Fourth Proportional to 121,521.36, 182,238.30 and 51,405.60

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Solution

The fourth proportional to 121,521.36, 182,238.30 and 51,405.60 is: 77,089.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,521.36 : 182,238.30 = 51,405.60 : x
  2. Step 2: Convert to fraction form
    121,521.36/182,238.30 = 51,405.60/x
  3. Step 3: Cross multiply
    121,521.36x = 182,238.30 × 51,405.60
  4. Step 4: Simplify right side
    121,521.36x = 9,368,069,154.48
  5. Step 5: Solve for x
    x = 9,368,069,154.48/121,521.36
  6. Step 6: Final answer
    x = 77,089.90

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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.