Home / 124,285.20-186,427.80-71,651.40

Finding the Fourth Proportional to 124,285.20, 186,427.80 and 71,651.40

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Solution

The fourth proportional to 124,285.20, 186,427.80 and 71,651.40 is: 107,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,285.20 : 186,427.80 = 71,651.40 : x
  2. Step 2: Convert to fraction form
    124,285.20/186,427.80 = 71,651.40/x
  3. Step 3: Cross multiply
    124,285.20x = 186,427.80 × 71,651.40
  4. Step 4: Simplify right side
    124,285.20x = 13,357,812,868.92
  5. Step 5: Solve for x
    x = 13,357,812,868.92/124,285.20
  6. Step 6: Final answer
    x = 107,477.10

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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.