Home / 155,906,876.61-215,148,879.95-86,290,767.09

Finding the Fourth Proportional to 155,906,876.61, 215,148,879.95 and 86,290,767.09

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Solution

The fourth proportional to 155,906,876.61, 215,148,879.95 and 86,290,767.09 is: 119,079,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,906,876.61 : 215,148,879.95 = 86,290,767.09 : x
  2. Step 2: Convert to fraction form
    155,906,876.61/215,148,879.95 = 86,290,767.09/x
  3. Step 3: Cross multiply
    155,906,876.61x = 215,148,879.95 × 86,290,767.09
  4. Step 4: Simplify right side
    155,906,876.61x = 18,565,361,889,008,368
  5. Step 5: Solve for x
    x = 18,565,361,889,008,368/155,906,876.61
  6. Step 6: Final answer
    x = 119,079,814.13

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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.