Home / 100,949.63-139,313.36-56,240.51

Finding the Fourth Proportional to 100,949.63, 139,313.36 and 56,240.51

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Solution

The fourth proportional to 100,949.63, 139,313.36 and 56,240.51 is: 77,613.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,949.63 : 139,313.36 = 56,240.51 : x
  2. Step 2: Convert to fraction form
    100,949.63/139,313.36 = 56,240.51/x
  3. Step 3: Cross multiply
    100,949.63x = 139,313.36 × 56,240.51
  4. Step 4: Simplify right side
    100,949.63x = 7,835,053,860.25
  5. Step 5: Solve for x
    x = 7,835,053,860.25/100,949.63
  6. Step 6: Final answer
    x = 77,613.50

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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.