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Finding the Fourth Proportional to 154,701.66, 213,477.20 and 91,030.80

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Solution

The fourth proportional to 154,701.66, 213,477.20 and 91,030.80 is: 125,615.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,701.66 : 213,477.20 = 91,030.80 : x
  2. Step 2: Convert to fraction form
    154,701.66/213,477.20 = 91,030.80/x
  3. Step 3: Cross multiply
    154,701.66x = 213,477.20 × 91,030.80
  4. Step 4: Simplify right side
    154,701.66x = 19,433,000,297.76
  5. Step 5: Solve for x
    x = 19,433,000,297.76/154,701.66
  6. Step 6: Final answer
    x = 125,615.98

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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.