Home / 153,995.51-212,515.43-90,334.37

Finding the Fourth Proportional to 153,995.51, 212,515.43 and 90,334.37

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Solution

The fourth proportional to 153,995.51, 212,515.43 and 90,334.37 is: 124,662.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,995.51 : 212,515.43 = 90,334.37 : x
  2. Step 2: Convert to fraction form
    153,995.51/212,515.43 = 90,334.37/x
  3. Step 3: Cross multiply
    153,995.51x = 212,515.43 × 90,334.37
  4. Step 4: Simplify right side
    153,995.51x = 19,197,445,970.08
  5. Step 5: Solve for x
    x = 19,197,445,970.08/153,995.51
  6. Step 6: Final answer
    x = 124,662.38

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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.