Home / 100,929.36-139,286.28-56,220.24

Finding the Fourth Proportional to 100,929.36, 139,286.28 and 56,220.24

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Solution

The fourth proportional to 100,929.36, 139,286.28 and 56,220.24 is: 77,586.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,929.36 : 139,286.28 = 56,220.24 : x
  2. Step 2: Convert to fraction form
    100,929.36/139,286.28 = 56,220.24/x
  3. Step 3: Cross multiply
    100,929.36x = 139,286.28 × 56,220.24
  4. Step 4: Simplify right side
    100,929.36x = 7,830,708,090.31
  5. Step 5: Solve for x
    x = 7,830,708,090.31/100,929.36
  6. Step 6: Final answer
    x = 77,586.03

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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.