Home / 155,010.30-213,859.08-101,326.32

Finding the Fourth Proportional to 155,010.30, 213,859.08 and 101,326.32

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Solution

The fourth proportional to 155,010.30, 213,859.08 and 101,326.32 is: 139,794.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,010.30 : 213,859.08 = 101,326.32 : x
  2. Step 2: Convert to fraction form
    155,010.30/213,859.08 = 101,326.32/x
  3. Step 3: Cross multiply
    155,010.30x = 213,859.08 × 101,326.32
  4. Step 4: Simplify right side
    155,010.30x = 21,669,553,574.99
  5. Step 5: Solve for x
    x = 21,669,553,574.99/155,010.30
  6. Step 6: Final answer
    x = 139,794.28

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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.