Home / 145,629.36-200,983.68-89,078.40

Finding the Fourth Proportional to 145,629.36, 200,983.68 and 89,078.40

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Solution

The fourth proportional to 145,629.36, 200,983.68 and 89,078.40 is: 122,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,629.36 : 200,983.68 = 89,078.40 : x
  2. Step 2: Convert to fraction form
    145,629.36/200,983.68 = 89,078.40/x
  3. Step 3: Cross multiply
    145,629.36x = 200,983.68 × 89,078.40
  4. Step 4: Simplify right side
    145,629.36x = 17,903,304,640.51
  5. Step 5: Solve for x
    x = 17,903,304,640.51/145,629.36
  6. Step 6: Final answer
    x = 122,937.47

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1.5x scale

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.