Home / 100,349.72-138,460.93-57,883.65

Finding the Fourth Proportional to 100,349.72, 138,460.93 and 57,883.65

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Solution

The fourth proportional to 100,349.72, 138,460.93 and 57,883.65 is: 79,866.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,349.72 : 138,460.93 = 57,883.65 : x
  2. Step 2: Convert to fraction form
    100,349.72/138,460.93 = 57,883.65/x
  3. Step 3: Cross multiply
    100,349.72x = 138,460.93 × 57,883.65
  4. Step 4: Simplify right side
    100,349.72x = 8,014,623,346.86
  5. Step 5: Solve for x
    x = 8,014,623,346.86/100,349.72
  6. Step 6: Final answer
    x = 79,866.92

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1.5x scale

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.