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Finding the Fourth Proportional to 144,024.40, 216,036.60 and 81,816.40

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Solution

The fourth proportional to 144,024.40, 216,036.60 and 81,816.40 is: 122,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,024.40 : 216,036.60 = 81,816.40 : x
  2. Step 2: Convert to fraction form
    144,024.40/216,036.60 = 81,816.40/x
  3. Step 3: Cross multiply
    144,024.40x = 216,036.60 × 81,816.40
  4. Step 4: Simplify right side
    144,024.40x = 17,675,336,880.24
  5. Step 5: Solve for x
    x = 17,675,336,880.24/144,024.40
  6. Step 6: Final answer
    x = 122,724.60

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1.5x scale

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.