Home / 103,722.36-155,643.90-43,747.08

Finding the Fourth Proportional to 103,722.36, 155,643.90 and 43,747.08

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Solution

The fourth proportional to 103,722.36, 155,643.90 and 43,747.08 is: 65,646.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,722.36 : 155,643.90 = 43,747.08 : x
  2. Step 2: Convert to fraction form
    103,722.36/155,643.90 = 43,747.08/x
  3. Step 3: Cross multiply
    103,722.36x = 155,643.90 × 43,747.08
  4. Step 4: Simplify right side
    103,722.36x = 6,808,966,144.81
  5. Step 5: Solve for x
    x = 6,808,966,144.81/103,722.36
  6. Step 6: Final answer
    x = 65,646.08

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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.