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Finding the Fourth Proportional to 158,303.66, 218,459.39 and 85,707.33

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Solution

The fourth proportional to 158,303.66, 218,459.39 and 85,707.33 is: 118,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,303.66 : 218,459.39 = 85,707.33 : x
  2. Step 2: Convert to fraction form
    158,303.66/218,459.39 = 85,707.33/x
  3. Step 3: Cross multiply
    158,303.66x = 218,459.39 × 85,707.33
  4. Step 4: Simplify right side
    158,303.66x = 18,723,570,601.79
  5. Step 5: Solve for x
    x = 18,723,570,601.79/158,303.66
  6. Step 6: Final answer
    x = 118,276.30

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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.