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Finding the Fourth Proportional to 158,187.69, 218,298.87 and 86,567.67

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Solution

The fourth proportional to 158,187.69, 218,298.87 and 86,567.67 is: 119,463.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,187.69 : 218,298.87 = 86,567.67 : x
  2. Step 2: Convert to fraction form
    158,187.69/218,298.87 = 86,567.67/x
  3. Step 3: Cross multiply
    158,187.69x = 218,298.87 × 86,567.67
  4. Step 4: Simplify right side
    158,187.69x = 18,897,624,539.53
  5. Step 5: Solve for x
    x = 18,897,624,539.53/158,187.69
  6. Step 6: Final answer
    x = 119,463.31

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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.