Home / 147,731.40-221,597.10-138,983.40

Finding the Fourth Proportional to 147,731.40, 221,597.10 and 138,983.40

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Solution

The fourth proportional to 147,731.40, 221,597.10 and 138,983.40 is: 208,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,731.40 : 221,597.10 = 138,983.40 : x
  2. Step 2: Convert to fraction form
    147,731.40/221,597.10 = 138,983.40/x
  3. Step 3: Cross multiply
    147,731.40x = 221,597.10 × 138,983.40
  4. Step 4: Simplify right side
    147,731.40x = 30,798,318,388.14
  5. Step 5: Solve for x
    x = 30,798,318,388.14/147,731.40
  6. Step 6: Final answer
    x = 208,475.10

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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.