Home / 141,721.60-212,389.44-66,830.08

Finding the Fourth Proportional to 141,721.60, 212,389.44 and 66,830.08

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Solution

The fourth proportional to 141,721.60, 212,389.44 and 66,830.08 is: 100,154.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,721.60 : 212,389.44 = 66,830.08 : x
  2. Step 2: Convert to fraction form
    141,721.60/212,389.44 = 66,830.08/x
  3. Step 3: Cross multiply
    141,721.60x = 212,389.44 × 66,830.08
  4. Step 4: Simplify right side
    141,721.60x = 14,194,003,266.36
  5. Step 5: Solve for x
    x = 14,194,003,266.36/141,721.60
  6. Step 6: Final answer
    x = 100,154.13

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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.