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Finding the Fourth Proportional to 147,891.70, 221,946.90 and 97,955.20

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Solution

The fourth proportional to 147,891.70, 221,946.90 and 97,955.20 is: 147,005.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,891.70 : 221,946.90 = 97,955.20 : x
  2. Step 2: Convert to fraction form
    147,891.70/221,946.90 = 97,955.20/x
  3. Step 3: Cross multiply
    147,891.70x = 221,946.90 × 97,955.20
  4. Step 4: Simplify right side
    147,891.70x = 21,740,852,978.88
  5. Step 5: Solve for x
    x = 21,740,852,978.88/147,891.70
  6. Step 6: Final answer
    x = 147,005.23

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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.