Home / 100,125.56-138,026.04-76,210.58

Finding the Fourth Proportional to 100,125.56, 138,026.04 and 76,210.58

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Solution

The fourth proportional to 100,125.56, 138,026.04 and 76,210.58 is: 105,058.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,125.56 : 138,026.04 = 76,210.58 : x
  2. Step 2: Convert to fraction form
    100,125.56/138,026.04 = 76,210.58/x
  3. Step 3: Cross multiply
    100,125.56x = 138,026.04 × 76,210.58
  4. Step 4: Simplify right side
    100,125.56x = 10,519,044,563.50
  5. Step 5: Solve for x
    x = 10,519,044,563.50/100,125.56
  6. Step 6: Final answer
    x = 105,058.53

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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.