Home / 85,397.22-127,924.47-78,421.59

Finding the Fourth Proportional to 85,397.22, 127,924.47 and 78,421.59

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Solution

The fourth proportional to 85,397.22, 127,924.47 and 78,421.59 is: 117,475.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,397.22 : 127,924.47 = 78,421.59 : x
  2. Step 2: Convert to fraction form
    85,397.22/127,924.47 = 78,421.59/x
  3. Step 3: Cross multiply
    85,397.22x = 127,924.47 × 78,421.59
  4. Step 4: Simplify right side
    85,397.22x = 10,032,040,337.31
  5. Step 5: Solve for x
    x = 10,032,040,337.31/85,397.22
  6. Step 6: Final answer
    x = 117,475.02

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1.5x scale

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.