Home / 145,583.10-218,300.80-66,629.70

Finding the Fourth Proportional to 145,583.10, 218,300.80 and 66,629.70

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Solution

The fourth proportional to 145,583.10, 218,300.80 and 66,629.70 is: 99,910.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,583.10 : 218,300.80 = 66,629.70 : x
  2. Step 2: Convert to fraction form
    145,583.10/218,300.80 = 66,629.70/x
  3. Step 3: Cross multiply
    145,583.10x = 218,300.80 × 66,629.70
  4. Step 4: Simplify right side
    145,583.10x = 14,545,316,813.76
  5. Step 5: Solve for x
    x = 14,545,316,813.76/145,583.10
  6. Step 6: Final answer
    x = 99,910.75

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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.