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Finding the Fourth Proportional to 124,810.80, 186,827.40 and 72,063.60

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Solution

The fourth proportional to 124,810.80, 186,827.40 and 72,063.60 is: 107,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,810.80 : 186,827.40 = 72,063.60 : x
  2. Step 2: Convert to fraction form
    124,810.80/186,827.40 = 72,063.60/x
  3. Step 3: Cross multiply
    124,810.80x = 186,827.40 × 72,063.60
  4. Step 4: Simplify right side
    124,810.80x = 13,463,455,022.64
  5. Step 5: Solve for x
    x = 13,463,455,022.64/124,810.80
  6. Step 6: Final answer
    x = 107,870.91

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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.