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Finding the Fourth Proportional to 124,303.80, 186,455.70 and 77,064.60

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Solution

The fourth proportional to 124,303.80, 186,455.70 and 77,064.60 is: 115,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,303.80 : 186,455.70 = 77,064.60 : x
  2. Step 2: Convert to fraction form
    124,303.80/186,455.70 = 77,064.60/x
  3. Step 3: Cross multiply
    124,303.80x = 186,455.70 × 77,064.60
  4. Step 4: Simplify right side
    124,303.80x = 14,369,133,938.22
  5. Step 5: Solve for x
    x = 14,369,133,938.22/124,303.80
  6. Step 6: Final answer
    x = 115,596.90

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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.