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Finding the Fourth Proportional to 124,622.60, 186,994.89 and 77,225.01

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Solution

The fourth proportional to 124,622.60, 186,994.89 and 77,225.01 is: 115,875.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,622.60 : 186,994.89 = 77,225.01 : x
  2. Step 2: Convert to fraction form
    124,622.60/186,994.89 = 77,225.01/x
  3. Step 3: Cross multiply
    124,622.60x = 186,994.89 × 77,225.01
  4. Step 4: Simplify right side
    124,622.60x = 14,440,681,589.65
  5. Step 5: Solve for x
    x = 14,440,681,589.65/124,622.60
  6. Step 6: Final answer
    x = 115,875.31

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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.