Home / 140,004.90-210,007.35-100,638.90

Finding the Fourth Proportional to 140,004.90, 210,007.35 and 100,638.90

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Solution

The fourth proportional to 140,004.90, 210,007.35 and 100,638.90 is: 150,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,004.90 : 210,007.35 = 100,638.90 : x
  2. Step 2: Convert to fraction form
    140,004.90/210,007.35 = 100,638.90/x
  3. Step 3: Cross multiply
    140,004.90x = 210,007.35 × 100,638.90
  4. Step 4: Simplify right side
    140,004.90x = 21,134,908,695.92
  5. Step 5: Solve for x
    x = 21,134,908,695.92/140,004.90
  6. Step 6: Final answer
    x = 150,958.35

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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.