Home / 147,731.40-221,445.90-72,736.20

Finding the Fourth Proportional to 147,731.40, 221,445.90 and 72,736.20

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Solution

The fourth proportional to 147,731.40, 221,445.90 and 72,736.20 is: 109,029.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,731.40 : 221,445.90 = 72,736.20 : x
  2. Step 2: Convert to fraction form
    147,731.40/221,445.90 = 72,736.20/x
  3. Step 3: Cross multiply
    147,731.40x = 221,445.90 × 72,736.20
  4. Step 4: Simplify right side
    147,731.40x = 16,107,133,271.58
  5. Step 5: Solve for x
    x = 16,107,133,271.58/147,731.40
  6. Step 6: Final answer
    x = 109,029.86

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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.