Home / 138,012.32-207,018.48-89,075.36

Finding the Fourth Proportional to 138,012.32, 207,018.48 and 89,075.36

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Solution

The fourth proportional to 138,012.32, 207,018.48 and 89,075.36 is: 133,613.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,012.32 : 207,018.48 = 89,075.36 : x
  2. Step 2: Convert to fraction form
    138,012.32/207,018.48 = 89,075.36/x
  3. Step 3: Cross multiply
    138,012.32x = 207,018.48 × 89,075.36
  4. Step 4: Simplify right side
    138,012.32x = 18,440,245,632.65
  5. Step 5: Solve for x
    x = 18,440,245,632.65/138,012.32
  6. Step 6: Final answer
    x = 133,613.04

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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.