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Finding the Fourth Proportional to 145,730.22, 218,538.06 and 70,828.44

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Solution

The fourth proportional to 145,730.22, 218,538.06 and 70,828.44 is: 106,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,730.22 : 218,538.06 = 70,828.44 : x
  2. Step 2: Convert to fraction form
    145,730.22/218,538.06 = 70,828.44/x
  3. Step 3: Cross multiply
    145,730.22x = 218,538.06 × 70,828.44
  4. Step 4: Simplify right side
    145,730.22x = 15,478,709,870.43
  5. Step 5: Solve for x
    x = 15,478,709,870.43/145,730.22
  6. Step 6: Final answer
    x = 106,214.83

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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.