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Finding the Fourth Proportional to 105,612.66, 145,748.16 and 63,195.39

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Solution

The fourth proportional to 105,612.66, 145,748.16 and 63,195.39 is: 87,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,612.66 : 145,748.16 = 63,195.39 : x
  2. Step 2: Convert to fraction form
    105,612.66/145,748.16 = 63,195.39/x
  3. Step 3: Cross multiply
    105,612.66x = 145,748.16 × 63,195.39
  4. Step 4: Simplify right side
    105,612.66x = 9,210,611,812.98
  5. Step 5: Solve for x
    x = 9,210,611,812.98/105,612.66
  6. Step 6: Final answer
    x = 87,211.25

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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.