Home / 115,145.90-158,898.94-64,158.42

Finding the Fourth Proportional to 115,145.90, 158,898.94 and 64,158.42

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Solution

The fourth proportional to 115,145.90, 158,898.94 and 64,158.42 is: 88,537.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,145.90 : 158,898.94 = 64,158.42 : x
  2. Step 2: Convert to fraction form
    115,145.90/158,898.94 = 64,158.42/x
  3. Step 3: Cross multiply
    115,145.90x = 158,898.94 × 64,158.42
  4. Step 4: Simplify right side
    115,145.90x = 10,194,704,930.07
  5. Step 5: Solve for x
    x = 10,194,704,930.07/115,145.90
  6. Step 6: Final answer
    x = 88,537.28

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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.