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Finding the Fourth Proportional to 122,637.63, 169,210.37 and 71,621.40

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Solution

The fourth proportional to 122,637.63, 169,210.37 and 71,621.40 is: 98,820.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,637.63 : 169,210.37 = 71,621.40 : x
  2. Step 2: Convert to fraction form
    122,637.63/169,210.37 = 71,621.40/x
  3. Step 3: Cross multiply
    122,637.63x = 169,210.37 × 71,621.40
  4. Step 4: Simplify right side
    122,637.63x = 12,119,083,772.97
  5. Step 5: Solve for x
    x = 12,119,083,772.97/122,637.63
  6. Step 6: Final answer
    x = 98,820.27

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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.