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Finding the Fourth Proportional to 141,980.76, 212,858.72 and 70,866.80

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Solution

The fourth proportional to 141,980.76, 212,858.72 and 70,866.80 is: 106,244.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,980.76 : 212,858.72 = 70,866.80 : x
  2. Step 2: Convert to fraction form
    141,980.76/212,858.72 = 70,866.80/x
  3. Step 3: Cross multiply
    141,980.76x = 212,858.72 × 70,866.80
  4. Step 4: Simplify right side
    141,980.76x = 15,084,616,338.50
  5. Step 5: Solve for x
    x = 15,084,616,338.50/141,980.76
  6. Step 6: Final answer
    x = 106,244.09

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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.