Home / 155,903,659.93-215,147,118.06-85,339,672.63

Finding the Fourth Proportional to 155,903,659.93, 215,147,118.06 and 85,339,672.63

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Solution

The fourth proportional to 155,903,659.93, 215,147,118.06 and 85,339,672.63 is: 117,768,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,903,659.93 : 215,147,118.06 = 85,339,672.63 : x
  2. Step 2: Convert to fraction form
    155,903,659.93/215,147,118.06 = 85,339,672.63/x
  3. Step 3: Cross multiply
    155,903,659.93x = 215,147,118.06 × 85,339,672.63
  4. Step 4: Simplify right side
    155,903,659.93x = 18,360,584,622,528,360
  5. Step 5: Solve for x
    x = 18,360,584,622,528,360/155,903,659.93
  6. Step 6: Final answer
    x = 117,768,785.10

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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.