Home / 154,290.40-213,004.72-100,608.16

Finding the Fourth Proportional to 154,290.40, 213,004.72 and 100,608.16

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Solution

The fourth proportional to 154,290.40, 213,004.72 and 100,608.16 is: 138,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,290.40 : 213,004.72 = 100,608.16 : x
  2. Step 2: Convert to fraction form
    154,290.40/213,004.72 = 100,608.16/x
  3. Step 3: Cross multiply
    154,290.40x = 213,004.72 × 100,608.16
  4. Step 4: Simplify right side
    154,290.40x = 21,430,012,950.52
  5. Step 5: Solve for x
    x = 21,430,012,950.52/154,290.40
  6. Step 6: Final answer
    x = 138,894.01

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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.