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Finding the Fourth Proportional to 144,603.20, 216,904.80 and 131,700.80

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Solution

The fourth proportional to 144,603.20, 216,904.80 and 131,700.80 is: 197,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,603.20 : 216,904.80 = 131,700.80 : x
  2. Step 2: Convert to fraction form
    144,603.20/216,904.80 = 131,700.80/x
  3. Step 3: Cross multiply
    144,603.20x = 216,904.80 × 131,700.80
  4. Step 4: Simplify right side
    144,603.20x = 28,566,535,683.84
  5. Step 5: Solve for x
    x = 28,566,535,683.84/144,603.20
  6. Step 6: Final answer
    x = 197,551.20

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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.