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Finding the Fourth Proportional to 144,342, 216,603.21 and 69,470.06

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Solution

The fourth proportional to 144,342, 216,603.21 and 69,470.06 is: 104,248.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,342 : 216,603.21 = 69,470.06 : x
  2. Step 2: Convert to fraction form
    144,342/216,603.21 = 69,470.06/x
  3. Step 3: Cross multiply
    144,342x = 216,603.21 × 69,470.06
  4. Step 4: Simplify right side
    144,342x = 15,047,437,172.39
  5. Step 5: Solve for x
    x = 15,047,437,172.39/144,342
  6. Step 6: Final answer
    x = 104,248.50

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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.