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Finding the Fourth Proportional to 147,531, 220,922.80 and 91,480.58

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Solution

The fourth proportional to 147,531, 220,922.80 and 91,480.58 is: 136,989.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,531 : 220,922.80 = 91,480.58 : x
  2. Step 2: Convert to fraction form
    147,531/220,922.80 = 91,480.58/x
  3. Step 3: Cross multiply
    147,531x = 220,922.80 × 91,480.58
  4. Step 4: Simplify right side
    147,531x = 20,210,145,879.22
  5. Step 5: Solve for x
    x = 20,210,145,879.22/147,531
  6. Step 6: Final answer
    x = 136,989.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.