Home / 230,889.18-318,624.04-128,916.37

Finding the Fourth Proportional to 230,889.18, 318,624.04 and 128,916.37

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Solution

The fourth proportional to 230,889.18, 318,624.04 and 128,916.37 is: 177,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,889.18 : 318,624.04 = 128,916.37 : x
  2. Step 2: Convert to fraction form
    230,889.18/318,624.04 = 128,916.37/x
  3. Step 3: Cross multiply
    230,889.18x = 318,624.04 × 128,916.37
  4. Step 4: Simplify right side
    230,889.18x = 41,075,853,986.95
  5. Step 5: Solve for x
    x = 41,075,853,986.95/230,889.18
  6. Step 6: Final answer
    x = 177,902.90

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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.