Home / 147,079-220,618.52-87,931.60

Finding the Fourth Proportional to 147,079, 220,618.52 and 87,931.60

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Solution

The fourth proportional to 147,079, 220,618.52 and 87,931.60 is: 131,897.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,079 : 220,618.52 = 87,931.60 : x
  2. Step 2: Convert to fraction form
    147,079/220,618.52 = 87,931.60/x
  3. Step 3: Cross multiply
    147,079x = 220,618.52 × 87,931.60
  4. Step 4: Simplify right side
    147,079x = 19,399,339,453.23
  5. Step 5: Solve for x
    x = 19,399,339,453.23/147,079
  6. Step 6: Final answer
    x = 131,897.41

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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.