Home / 145,666.72-218,521.59-74,629.54

Finding the Fourth Proportional to 145,666.72, 218,521.59 and 74,629.54

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Solution

The fourth proportional to 145,666.72, 218,521.59 and 74,629.54 is: 111,955.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,666.72 : 218,521.59 = 74,629.54 : x
  2. Step 2: Convert to fraction form
    145,666.72/218,521.59 = 74,629.54/x
  3. Step 3: Cross multiply
    145,666.72x = 218,521.59 × 74,629.54
  4. Step 4: Simplify right side
    145,666.72x = 16,308,165,741.77
  5. Step 5: Solve for x
    x = 16,308,165,741.77/145,666.72
  6. Step 6: Final answer
    x = 111,955.33

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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.