Home / 100,210.17-138,290.06-54,888.91

Finding the Fourth Proportional to 100,210.17, 138,290.06 and 54,888.91

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Solution

The fourth proportional to 100,210.17, 138,290.06 and 54,888.91 is: 75,746.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,210.17 : 138,290.06 = 54,888.91 : x
  2. Step 2: Convert to fraction form
    100,210.17/138,290.06 = 54,888.91/x
  3. Step 3: Cross multiply
    100,210.17x = 138,290.06 × 54,888.91
  4. Step 4: Simplify right side
    100,210.17x = 7,590,590,525.92
  5. Step 5: Solve for x
    x = 7,590,590,525.92/100,210.17
  6. Step 6: Final answer
    x = 75,746.71

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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.