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Finding the Fourth Proportional to 163,905.40, 245,858.10 and 53,097.40

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Solution

The fourth proportional to 163,905.40, 245,858.10 and 53,097.40 is: 79,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,905.40 : 245,858.10 = 53,097.40 : x
  2. Step 2: Convert to fraction form
    163,905.40/245,858.10 = 53,097.40/x
  3. Step 3: Cross multiply
    163,905.40x = 245,858.10 × 53,097.40
  4. Step 4: Simplify right side
    163,905.40x = 13,054,425,878.94
  5. Step 5: Solve for x
    x = 13,054,425,878.94/163,905.40
  6. Step 6: Final answer
    x = 79,646.10

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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.