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Finding the Fourth Proportional to 124,580.20, 186,870.30 and 102,710.20

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Solution

The fourth proportional to 124,580.20, 186,870.30 and 102,710.20 is: 154,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,580.20 : 186,870.30 = 102,710.20 : x
  2. Step 2: Convert to fraction form
    124,580.20/186,870.30 = 102,710.20/x
  3. Step 3: Cross multiply
    124,580.20x = 186,870.30 × 102,710.20
  4. Step 4: Simplify right side
    124,580.20x = 19,193,485,887.06
  5. Step 5: Solve for x
    x = 19,193,485,887.06/124,580.20
  6. Step 6: Final answer
    x = 154,065.30

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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.