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Finding the Fourth Proportional to 105,349.84, 145,422.31 and 69,053.62

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Solution

The fourth proportional to 105,349.84, 145,422.31 and 69,053.62 is: 95,319.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,349.84 : 145,422.31 = 69,053.62 : x
  2. Step 2: Convert to fraction form
    105,349.84/145,422.31 = 69,053.62/x
  3. Step 3: Cross multiply
    105,349.84x = 145,422.31 × 69,053.62
  4. Step 4: Simplify right side
    105,349.84x = 10,041,936,934.26
  5. Step 5: Solve for x
    x = 10,041,936,934.26/105,349.84
  6. Step 6: Final answer
    x = 95,319.91

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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.