Home / 100,044.16-138,041.84-57,022.82

Finding the Fourth Proportional to 100,044.16, 138,041.84 and 57,022.82

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Solution

The fourth proportional to 100,044.16, 138,041.84 and 57,022.82 is: 78,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,044.16 : 138,041.84 = 57,022.82 : x
  2. Step 2: Convert to fraction form
    100,044.16/138,041.84 = 57,022.82/x
  3. Step 3: Cross multiply
    100,044.16x = 138,041.84 × 57,022.82
  4. Step 4: Simplify right side
    100,044.16x = 7,871,534,994.79
  5. Step 5: Solve for x
    x = 7,871,534,994.79/100,044.16
  6. Step 6: Final answer
    x = 78,680.60

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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.