Home / 116,485.70-160,643.66-86,346.10

Finding the Fourth Proportional to 116,485.70, 160,643.66 and 86,346.10

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Solution

The fourth proportional to 116,485.70, 160,643.66 and 86,346.10 is: 119,078.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,485.70 : 160,643.66 = 86,346.10 : x
  2. Step 2: Convert to fraction form
    116,485.70/160,643.66 = 86,346.10/x
  3. Step 3: Cross multiply
    116,485.70x = 160,643.66 × 86,346.10
  4. Step 4: Simplify right side
    116,485.70x = 13,870,953,299.80
  5. Step 5: Solve for x
    x = 13,870,953,299.80/116,485.70
  6. Step 6: Final answer
    x = 119,078.60

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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.