Home / 140,421.40-210,632.10-87,277.30

Finding the Fourth Proportional to 140,421.40, 210,632.10 and 87,277.30

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Solution

The fourth proportional to 140,421.40, 210,632.10 and 87,277.30 is: 130,915.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,421.40 : 210,632.10 = 87,277.30 : x
  2. Step 2: Convert to fraction form
    140,421.40/210,632.10 = 87,277.30/x
  3. Step 3: Cross multiply
    140,421.40x = 210,632.10 × 87,277.30
  4. Step 4: Simplify right side
    140,421.40x = 18,383,400,981.33
  5. Step 5: Solve for x
    x = 18,383,400,981.33/140,421.40
  6. Step 6: Final answer
    x = 130,915.95

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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.