Home / 215,910.84-323,875.98-66,140.22

Finding the Fourth Proportional to 215,910.84, 323,875.98 and 66,140.22

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Solution

The fourth proportional to 215,910.84, 323,875.98 and 66,140.22 is: 99,213.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,910.84 : 323,875.98 = 66,140.22 : x
  2. Step 2: Convert to fraction form
    215,910.84/323,875.98 = 66,140.22/x
  3. Step 3: Cross multiply
    215,910.84x = 323,875.98 × 66,140.22
  4. Step 4: Simplify right side
    215,910.84x = 21,421,228,569.92
  5. Step 5: Solve for x
    x = 21,421,228,569.92/215,910.84
  6. Step 6: Final answer
    x = 99,213.31

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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.