Home / 103,784.04-143,172.26-99,760.36

Finding the Fourth Proportional to 103,784.04, 143,172.26 and 99,760.36

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Solution

The fourth proportional to 103,784.04, 143,172.26 and 99,760.36 is: 137,621.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,784.04 : 143,172.26 = 99,760.36 : x
  2. Step 2: Convert to fraction form
    103,784.04/143,172.26 = 99,760.36/x
  3. Step 3: Cross multiply
    103,784.04x = 143,172.26 × 99,760.36
  4. Step 4: Simplify right side
    103,784.04x = 14,282,916,199.61
  5. Step 5: Solve for x
    x = 14,282,916,199.61/103,784.04
  6. Step 6: Final answer
    x = 137,621.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.