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Finding the Fourth Proportional to 145,980.80, 218,907.20 and 67,068.80

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Solution

The fourth proportional to 145,980.80, 218,907.20 and 67,068.80 is: 100,573.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,980.80 : 218,907.20 = 67,068.80 : x
  2. Step 2: Convert to fraction form
    145,980.80/218,907.20 = 67,068.80/x
  3. Step 3: Cross multiply
    145,980.80x = 218,907.20 × 67,068.80
  4. Step 4: Simplify right side
    145,980.80x = 14,681,843,215.36
  5. Step 5: Solve for x
    x = 14,681,843,215.36/145,980.80
  6. Step 6: Final answer
    x = 100,573.80

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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.