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Finding the Fourth Proportional to 145,018.66, 200,127.72 and 108,655.60

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Solution

The fourth proportional to 145,018.66, 200,127.72 and 108,655.60 is: 149,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,018.66 : 200,127.72 = 108,655.60 : x
  2. Step 2: Convert to fraction form
    145,018.66/200,127.72 = 108,655.60/x
  3. Step 3: Cross multiply
    145,018.66x = 200,127.72 × 108,655.60
  4. Step 4: Simplify right side
    145,018.66x = 21,744,997,493.23
  5. Step 5: Solve for x
    x = 21,744,997,493.23/145,018.66
  6. Step 6: Final answer
    x = 149,946.20

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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.