Home / 119,261.92-164,455.36-100,128.51

Finding the Fourth Proportional to 119,261.92, 164,455.36 and 100,128.51

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Solution

The fourth proportional to 119,261.92, 164,455.36 and 100,128.51 is: 138,071.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,261.92 : 164,455.36 = 100,128.51 : x
  2. Step 2: Convert to fraction form
    119,261.92/164,455.36 = 100,128.51/x
  3. Step 3: Cross multiply
    119,261.92x = 164,455.36 × 100,128.51
  4. Step 4: Simplify right side
    119,261.92x = 16,466,670,158.31
  5. Step 5: Solve for x
    x = 16,466,670,158.31/119,261.92
  6. Step 6: Final answer
    x = 138,071.48

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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.