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Finding the Fourth Proportional to 147,603.80, 221,405.70 and 97,740.20

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Solution

The fourth proportional to 147,603.80, 221,405.70 and 97,740.20 is: 146,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,603.80 : 221,405.70 = 97,740.20 : x
  2. Step 2: Convert to fraction form
    147,603.80/221,405.70 = 97,740.20/x
  3. Step 3: Cross multiply
    147,603.80x = 221,405.70 × 97,740.20
  4. Step 4: Simplify right side
    147,603.80x = 21,640,237,399.14
  5. Step 5: Solve for x
    x = 21,640,237,399.14/147,603.80
  6. Step 6: Final answer
    x = 146,610.30

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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.