Home / 145,503.20-200,792.40-81,841.04

Finding the Fourth Proportional to 145,503.20, 200,792.40 and 81,841.04

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Solution

The fourth proportional to 145,503.20, 200,792.40 and 81,841.04 is: 112,939.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,503.20 : 200,792.40 = 81,841.04 : x
  2. Step 2: Convert to fraction form
    145,503.20/200,792.40 = 81,841.04/x
  3. Step 3: Cross multiply
    145,503.20x = 200,792.40 × 81,841.04
  4. Step 4: Simplify right side
    145,503.20x = 16,433,058,840.10
  5. Step 5: Solve for x
    x = 16,433,058,840.10/145,503.20
  6. Step 6: Final answer
    x = 112,939.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.