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Finding the Fourth Proportional to 105,573.42, 145,636.11 and 65,274.30

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Solution

The fourth proportional to 105,573.42, 145,636.11 and 65,274.30 is: 90,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,573.42 : 145,636.11 = 65,274.30 : x
  2. Step 2: Convert to fraction form
    105,573.42/145,636.11 = 65,274.30/x
  3. Step 3: Cross multiply
    105,573.42x = 145,636.11 × 65,274.30
  4. Step 4: Simplify right side
    105,573.42x = 9,506,295,134.97
  5. Step 5: Solve for x
    x = 9,506,295,134.97/105,573.42
  6. Step 6: Final answer
    x = 90,044.40

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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.