Home / 145,464,391.89-200,745,116.64-79,389,128.16

Finding the Fourth Proportional to 145,464,391.89, 200,745,116.64 and 79,389,128.16

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Solution

The fourth proportional to 145,464,391.89, 200,745,116.64 and 79,389,128.16 is: 109,559,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,464,391.89 : 200,745,116.64 = 79,389,128.16 : x
  2. Step 2: Convert to fraction form
    145,464,391.89/200,745,116.64 = 79,389,128.16/x
  3. Step 3: Cross multiply
    145,464,391.89x = 200,745,116.64 × 79,389,128.16
  4. Step 4: Simplify right side
    145,464,391.89x = 15,936,979,792,427,106
  5. Step 5: Solve for x
    x = 15,936,979,792,427,106/145,464,391.89
  6. Step 6: Final answer
    x = 109,559,319.54

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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.