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Finding the Fourth Proportional to 144,985.20, 217,477.80 and 70,162.80

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Solution

The fourth proportional to 144,985.20, 217,477.80 and 70,162.80 is: 105,244.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,985.20 : 217,477.80 = 70,162.80 : x
  2. Step 2: Convert to fraction form
    144,985.20/217,477.80 = 70,162.80/x
  3. Step 3: Cross multiply
    144,985.20x = 217,477.80 × 70,162.80
  4. Step 4: Simplify right side
    144,985.20x = 15,258,851,385.84
  5. Step 5: Solve for x
    x = 15,258,851,385.84/144,985.20
  6. Step 6: Final answer
    x = 105,244.20

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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.