Home / 210,085.12-289,834.85-129,372.52

Finding the Fourth Proportional to 210,085.12, 289,834.85 and 129,372.52

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Solution

The fourth proportional to 210,085.12, 289,834.85 and 129,372.52 is: 178,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,085.12 : 289,834.85 = 129,372.52 : x
  2. Step 2: Convert to fraction form
    210,085.12/289,834.85 = 129,372.52/x
  3. Step 3: Cross multiply
    210,085.12x = 289,834.85 × 129,372.52
  4. Step 4: Simplify right side
    210,085.12x = 37,496,664,604.89
  5. Step 5: Solve for x
    x = 37,496,664,604.89/210,085.12
  6. Step 6: Final answer
    x = 178,483.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.