Home / 111,639.78-167,465.15-45,071.60

Finding the Fourth Proportional to 111,639.78, 167,465.15 and 45,071.60

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Solution

The fourth proportional to 111,639.78, 167,465.15 and 45,071.60 is: 67,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,639.78 : 167,465.15 = 45,071.60 : x
  2. Step 2: Convert to fraction form
    111,639.78/167,465.15 = 45,071.60/x
  3. Step 3: Cross multiply
    111,639.78x = 167,465.15 × 45,071.60
  4. Step 4: Simplify right side
    111,639.78x = 7,547,921,192.06
  5. Step 5: Solve for x
    x = 7,547,921,192.06/111,639.78
  6. Step 6: Final answer
    x = 67,609.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.