Home / 118,629.84-163,509.66-89,940

Finding the Fourth Proportional to 118,629.84, 163,509.66 and 89,940

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Solution

The fourth proportional to 118,629.84, 163,509.66 and 89,940 is: 123,965.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,629.84 : 163,509.66 = 89,940 : x
  2. Step 2: Convert to fraction form
    118,629.84/163,509.66 = 89,940/x
  3. Step 3: Cross multiply
    118,629.84x = 163,509.66 × 89,940
  4. Step 4: Simplify right side
    118,629.84x = 14,706,058,820.40
  5. Step 5: Solve for x
    x = 14,706,058,820.40/118,629.84
  6. Step 6: Final answer
    x = 123,965.93

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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.