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Finding the Fourth Proportional to 158,297.18, 218,450.46 and 85,700.84

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Solution

The fourth proportional to 158,297.18, 218,450.46 and 85,700.84 is: 118,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,297.18 : 218,450.46 = 85,700.84 : x
  2. Step 2: Convert to fraction form
    158,297.18/218,450.46 = 85,700.84/x
  3. Step 3: Cross multiply
    158,297.18x = 218,450.46 × 85,700.84
  4. Step 4: Simplify right side
    158,297.18x = 18,721,386,828.13
  5. Step 5: Solve for x
    x = 18,721,386,828.13/158,297.18
  6. Step 6: Final answer
    x = 118,267.35

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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.