Home / 208,029,763.60-312,081,970.20-86,873,462.80

Finding the Fourth Proportional to 208,029,763.60, 312,081,970.20 and 86,873,462.80

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Solution

The fourth proportional to 208,029,763.60, 312,081,970.20 and 86,873,462.80 is: 130,325,781.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,029,763.60 : 312,081,970.20 = 86,873,462.80 : x
  2. Step 2: Convert to fraction form
    208,029,763.60/312,081,970.20 = 86,873,462.80/x
  3. Step 3: Cross multiply
    208,029,763.60x = 312,081,970.20 × 86,873,462.80
  4. Step 4: Simplify right side
    208,029,763.60x = 27,111,641,428,720,408
  5. Step 5: Solve for x
    x = 27,111,641,428,720,408/208,029,763.60
  6. Step 6: Final answer
    x = 130,325,781.08

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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.