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Finding the Fourth Proportional to 126,636.64, 174,776.64 and 72,916.32

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Solution

The fourth proportional to 126,636.64, 174,776.64 and 72,916.32 is: 100,634.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,636.64 : 174,776.64 = 72,916.32 : x
  2. Step 2: Convert to fraction form
    126,636.64/174,776.64 = 72,916.32/x
  3. Step 3: Cross multiply
    126,636.64x = 174,776.64 × 72,916.32
  4. Step 4: Simplify right side
    126,636.64x = 12,744,069,410.76
  5. Step 5: Solve for x
    x = 12,744,069,410.76/126,636.64
  6. Step 6: Final answer
    x = 100,634.93

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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.