Home / 154,424.09-213,130.74-105,986.22

Finding the Fourth Proportional to 154,424.09, 213,130.74 and 105,986.22

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Solution

The fourth proportional to 154,424.09, 213,130.74 and 105,986.22 is: 146,278.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,424.09 : 213,130.74 = 105,986.22 : x
  2. Step 2: Convert to fraction form
    154,424.09/213,130.74 = 105,986.22/x
  3. Step 3: Cross multiply
    154,424.09x = 213,130.74 × 105,986.22
  4. Step 4: Simplify right side
    154,424.09x = 22,588,920,647.91
  5. Step 5: Solve for x
    x = 22,588,920,647.91/154,424.09
  6. Step 6: Final answer
    x = 146,278.48

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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.