Home / 140,421.34-210,684.62-72,911.26

Finding the Fourth Proportional to 140,421.34, 210,684.62 and 72,911.26

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Solution

The fourth proportional to 140,421.34, 210,684.62 and 72,911.26 is: 109,394.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,421.34 : 210,684.62 = 72,911.26 : x
  2. Step 2: Convert to fraction form
    140,421.34/210,684.62 = 72,911.26/x
  3. Step 3: Cross multiply
    140,421.34x = 210,684.62 × 72,911.26
  4. Step 4: Simplify right side
    140,421.34x = 15,361,281,106.82
  5. Step 5: Solve for x
    x = 15,361,281,106.82/140,421.34
  6. Step 6: Final answer
    x = 109,394.21

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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.