Home / 155,906,878.86-215,148,883.05-86,290,769.34

Finding the Fourth Proportional to 155,906,878.86, 215,148,883.05 and 86,290,769.34

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Solution

The fourth proportional to 155,906,878.86, 215,148,883.05 and 86,290,769.34 is: 119,079,817.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,906,878.86 : 215,148,883.05 = 86,290,769.34 : x
  2. Step 2: Convert to fraction form
    155,906,878.86/215,148,883.05 = 86,290,769.34/x
  3. Step 3: Cross multiply
    155,906,878.86x = 215,148,883.05 × 86,290,769.34
  4. Step 4: Simplify right side
    155,906,878.86x = 18,565,362,641,026,188
  5. Step 5: Solve for x
    x = 18,565,362,641,026,188/155,906,878.86
  6. Step 6: Final answer
    x = 119,079,817.24

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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.