Home / 138,567.88-191,222.26-77,314.60

Finding the Fourth Proportional to 138,567.88, 191,222.26 and 77,314.60

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Solution

The fourth proportional to 138,567.88, 191,222.26 and 77,314.60 is: 106,693.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,567.88 : 191,222.26 = 77,314.60 : x
  2. Step 2: Convert to fraction form
    138,567.88/191,222.26 = 77,314.60/x
  3. Step 3: Cross multiply
    138,567.88x = 191,222.26 × 77,314.60
  4. Step 4: Simplify right side
    138,567.88x = 14,784,272,543.00
  5. Step 5: Solve for x
    x = 14,784,272,543.00/138,567.88
  6. Step 6: Final answer
    x = 106,693.36

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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.