Home / 145,062,016.38-200,190,495.75-78,985,077.30

Finding the Fourth Proportional to 145,062,016.38, 200,190,495.75 and 78,985,077.30

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Solution

The fourth proportional to 145,062,016.38, 200,190,495.75 and 78,985,077.30 is: 109,002,081.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,062,016.38 : 200,190,495.75 = 78,985,077.30 : x
  2. Step 2: Convert to fraction form
    145,062,016.38/200,190,495.75 = 78,985,077.30/x
  3. Step 3: Cross multiply
    145,062,016.38x = 200,190,495.75 × 78,985,077.30
  4. Step 4: Simplify right side
    145,062,016.38x = 15,812,061,781,539,070
  5. Step 5: Solve for x
    x = 15,812,061,781,539,070/145,062,016.38
  6. Step 6: Final answer
    x = 109,002,081.84

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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.