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Finding the Fourth Proportional to 145,264.78, 200,484.08 and 81,602.63

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Solution

The fourth proportional to 145,264.78, 200,484.08 and 81,602.63 is: 112,622.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,264.78 : 200,484.08 = 81,602.63 : x
  2. Step 2: Convert to fraction form
    145,264.78/200,484.08 = 81,602.63/x
  3. Step 3: Cross multiply
    145,264.78x = 200,484.08 × 81,602.63
  4. Step 4: Simplify right side
    145,264.78x = 16,360,028,201.13
  5. Step 5: Solve for x
    x = 16,360,028,201.13/145,264.78
  6. Step 6: Final answer
    x = 112,622.12

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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.