Home / 142,970.62-214,237.23-76,420.21

Finding the Fourth Proportional to 142,970.62, 214,237.23 and 76,420.21

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Solution

The fourth proportional to 142,970.62, 214,237.23 and 76,420.21 is: 114,513.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,970.62 : 214,237.23 = 76,420.21 : x
  2. Step 2: Convert to fraction form
    142,970.62/214,237.23 = 76,420.21/x
  3. Step 3: Cross multiply
    142,970.62x = 214,237.23 × 76,420.21
  4. Step 4: Simplify right side
    142,970.62x = 16,372,054,106.42
  5. Step 5: Solve for x
    x = 16,372,054,106.42/142,970.62
  6. Step 6: Final answer
    x = 114,513.42

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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.