Home / 145,139.49-200,291.71-81,477.27

Finding the Fourth Proportional to 145,139.49, 200,291.71 and 81,477.27

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Solution

The fourth proportional to 145,139.49, 200,291.71 and 81,477.27 is: 112,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,139.49 : 200,291.71 = 81,477.27 : x
  2. Step 2: Convert to fraction form
    145,139.49/200,291.71 = 81,477.27/x
  3. Step 3: Cross multiply
    145,139.49x = 200,291.71 × 81,477.27
  4. Step 4: Simplify right side
    145,139.49x = 16,319,221,734.43
  5. Step 5: Solve for x
    x = 16,319,221,734.43/145,139.49
  6. Step 6: Final answer
    x = 112,438.19

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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.