Home / 100,889.02-139,214.66-57,866.28

Finding the Fourth Proportional to 100,889.02, 139,214.66 and 57,866.28

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Solution

The fourth proportional to 100,889.02, 139,214.66 and 57,866.28 is: 79,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,889.02 : 139,214.66 = 57,866.28 : x
  2. Step 2: Convert to fraction form
    100,889.02/139,214.66 = 57,866.28/x
  3. Step 3: Cross multiply
    100,889.02x = 139,214.66 × 57,866.28
  4. Step 4: Simplify right side
    100,889.02x = 8,055,834,206.33
  5. Step 5: Solve for x
    x = 8,055,834,206.33/100,889.02
  6. Step 6: Final answer
    x = 79,848.48

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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.