Home / 155,945,373.78-215,196,090-85,367,330.61

Finding the Fourth Proportional to 155,945,373.78, 215,196,090 and 85,367,330.61

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Solution

The fourth proportional to 155,945,373.78, 215,196,090 and 85,367,330.61 is: 117,802,249.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,945,373.78 : 215,196,090 = 85,367,330.61 : x
  2. Step 2: Convert to fraction form
    155,945,373.78/215,196,090 = 85,367,330.61/x
  3. Step 3: Cross multiply
    155,945,373.78x = 215,196,090 × 85,367,330.61
  4. Step 4: Simplify right side
    155,945,373.78x = 18,370,715,761,009,316
  5. Step 5: Solve for x
    x = 18,370,715,761,009,316/155,945,373.78
  6. Step 6: Final answer
    x = 117,802,249.06

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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.