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Finding the Fourth Proportional to 145,420.92, 200,613.51 and 84,994.11

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Solution

The fourth proportional to 145,420.92, 200,613.51 and 84,994.11 is: 117,252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,420.92 : 200,613.51 = 84,994.11 : x
  2. Step 2: Convert to fraction form
    145,420.92/200,613.51 = 84,994.11/x
  3. Step 3: Cross multiply
    145,420.92x = 200,613.51 × 84,994.11
  4. Step 4: Simplify right side
    145,420.92x = 17,050,966,736.43
  5. Step 5: Solve for x
    x = 17,050,966,736.43/145,420.92
  6. Step 6: Final answer
    x = 117,252.50

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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.