Home / 145,464,403.90-200,745,133.20-79,389,140.16

Finding the Fourth Proportional to 145,464,403.90, 200,745,133.20 and 79,389,140.16

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Solution

The fourth proportional to 145,464,403.90, 200,745,133.20 and 79,389,140.16 is: 109,559,336.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,464,403.90 : 200,745,133.20 = 79,389,140.16 : x
  2. Step 2: Convert to fraction form
    145,464,403.90/200,745,133.20 = 79,389,140.16/x
  3. Step 3: Cross multiply
    145,464,403.90x = 200,745,133.20 × 79,389,140.16
  4. Step 4: Simplify right side
    145,464,403.90x = 15,936,983,516,052,668
  5. Step 5: Solve for x
    x = 15,936,983,516,052,668/145,464,403.90
  6. Step 6: Final answer
    x = 109,559,336.09

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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.