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Finding the Fourth Proportional to 158,080.80, 218,157.12 and 90,108.03

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Solution

The fourth proportional to 158,080.80, 218,157.12 and 90,108.03 is: 124,352.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,080.80 : 218,157.12 = 90,108.03 : x
  2. Step 2: Convert to fraction form
    158,080.80/218,157.12 = 90,108.03/x
  3. Step 3: Cross multiply
    158,080.80x = 218,157.12 × 90,108.03
  4. Step 4: Simplify right side
    158,080.80x = 19,657,708,313.67
  5. Step 5: Solve for x
    x = 19,657,708,313.67/158,080.80
  6. Step 6: Final answer
    x = 124,352.28

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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.