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Finding the Fourth Proportional to 117,637.50, 162,339.75 and 64,645.50

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Solution

The fourth proportional to 117,637.50, 162,339.75 and 64,645.50 is: 89,210.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,637.50 : 162,339.75 = 64,645.50 : x
  2. Step 2: Convert to fraction form
    117,637.50/162,339.75 = 64,645.50/x
  3. Step 3: Cross multiply
    117,637.50x = 162,339.75 × 64,645.50
  4. Step 4: Simplify right side
    117,637.50x = 10,494,534,308.63
  5. Step 5: Solve for x
    x = 10,494,534,308.63/117,637.50
  6. Step 6: Final answer
    x = 89,210.79

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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.