Home / 118,422.57-163,421.20-64,706.43

Finding the Fourth Proportional to 118,422.57, 163,421.20 and 64,706.43

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Solution

The fourth proportional to 118,422.57, 163,421.20 and 64,706.43 is: 89,293.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,422.57 : 163,421.20 = 64,706.43 : x
  2. Step 2: Convert to fraction form
    118,422.57/163,421.20 = 64,706.43/x
  3. Step 3: Cross multiply
    118,422.57x = 163,421.20 × 64,706.43
  4. Step 4: Simplify right side
    118,422.57x = 10,574,402,114.78
  5. Step 5: Solve for x
    x = 10,574,402,114.78/118,422.57
  6. Step 6: Final answer
    x = 89,293.81

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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.