Home / 118,138.80-163,032.95-64,423.35

Finding the Fourth Proportional to 118,138.80, 163,032.95 and 64,423.35

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Solution

The fourth proportional to 118,138.80, 163,032.95 and 64,423.35 is: 88,904.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,138.80 : 163,032.95 = 64,423.35 : x
  2. Step 2: Convert to fraction form
    118,138.80/163,032.95 = 64,423.35/x
  3. Step 3: Cross multiply
    118,138.80x = 163,032.95 × 64,423.35
  4. Step 4: Simplify right side
    118,138.80x = 10,503,128,960.44
  5. Step 5: Solve for x
    x = 10,503,128,960.44/118,138.80
  6. Step 6: Final answer
    x = 88,904.99

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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.