Home / 118,129.37-163,021.95-64,415.43

Finding the Fourth Proportional to 118,129.37, 163,021.95 and 64,415.43

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Solution

The fourth proportional to 118,129.37, 163,021.95 and 64,415.43 is: 88,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,129.37 : 163,021.95 = 64,415.43 : x
  2. Step 2: Convert to fraction form
    118,129.37/163,021.95 = 64,415.43/x
  3. Step 3: Cross multiply
    118,129.37x = 163,021.95 × 64,415.43
  4. Step 4: Simplify right side
    118,129.37x = 10,501,129,008.69
  5. Step 5: Solve for x
    x = 10,501,129,008.69/118,129.37
  6. Step 6: Final answer
    x = 88,895.16

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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.