Home / 118,117.89-163,021.38-70,398.92

Finding the Fourth Proportional to 118,117.89, 163,021.38 and 70,398.92

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Solution

The fourth proportional to 118,117.89, 163,021.38 and 70,398.92 is: 97,161.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,117.89 : 163,021.38 = 70,398.92 : x
  2. Step 2: Convert to fraction form
    118,117.89/163,021.38 = 70,398.92/x
  3. Step 3: Cross multiply
    118,117.89x = 163,021.38 × 70,398.92
  4. Step 4: Simplify right side
    118,117.89x = 11,476,528,273.80
  5. Step 5: Solve for x
    x = 11,476,528,273.80/118,117.89
  6. Step 6: Final answer
    x = 97,161.64

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1.5x scale

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.