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Finding the Fourth Proportional to 118,888.32, 164,064.80 and 65,173.16

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Solution

The fourth proportional to 118,888.32, 164,064.80 and 65,173.16 is: 89,938.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,888.32 : 164,064.80 = 65,173.16 : x
  2. Step 2: Convert to fraction form
    118,888.32/164,064.80 = 65,173.16/x
  3. Step 3: Cross multiply
    118,888.32x = 164,064.80 × 65,173.16
  4. Step 4: Simplify right side
    118,888.32x = 10,692,621,460.77
  5. Step 5: Solve for x
    x = 10,692,621,460.77/118,888.32
  6. Step 6: Final answer
    x = 89,938.37

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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.