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Finding the Fourth Proportional to 144,381.36, 216,572.04 and 70,446

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Solution

The fourth proportional to 144,381.36, 216,572.04 and 70,446 is: 105,669.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,381.36 : 216,572.04 = 70,446 : x
  2. Step 2: Convert to fraction form
    144,381.36/216,572.04 = 70,446/x
  3. Step 3: Cross multiply
    144,381.36x = 216,572.04 × 70,446
  4. Step 4: Simplify right side
    144,381.36x = 15,256,633,929.84
  5. Step 5: Solve for x
    x = 15,256,633,929.84/144,381.36
  6. Step 6: Final answer
    x = 105,669.00

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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.