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Finding the Fourth Proportional to 123,357.60, 185,230.80 and 70,869.60

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Solution

The fourth proportional to 123,357.60, 185,230.80 and 70,869.60 is: 106,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,357.60 : 185,230.80 = 70,869.60 : x
  2. Step 2: Convert to fraction form
    123,357.60/185,230.80 = 70,869.60/x
  3. Step 3: Cross multiply
    123,357.60x = 185,230.80 × 70,869.60
  4. Step 4: Simplify right side
    123,357.60x = 13,127,232,703.68
  5. Step 5: Solve for x
    x = 13,127,232,703.68/123,357.60
  6. Step 6: Final answer
    x = 106,416.08

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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.