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Finding the Fourth Proportional to 158,041.62, 218,095.34 and 90,062.64

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Solution

The fourth proportional to 158,041.62, 218,095.34 and 90,062.64 is: 124,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,041.62 : 218,095.34 = 90,062.64 : x
  2. Step 2: Convert to fraction form
    158,041.62/218,095.34 = 90,062.64/x
  3. Step 3: Cross multiply
    158,041.62x = 218,095.34 × 90,062.64
  4. Step 4: Simplify right side
    158,041.62x = 19,642,241,641.78
  5. Step 5: Solve for x
    x = 19,642,241,641.78/158,041.62
  6. Step 6: Final answer
    x = 124,285.25

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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.