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Finding the Fourth Proportional to 105,015.51, 144,915.71 and 59,687.20

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Solution

The fourth proportional to 105,015.51, 144,915.71 and 59,687.20 is: 82,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,015.51 : 144,915.71 = 59,687.20 : x
  2. Step 2: Convert to fraction form
    105,015.51/144,915.71 = 59,687.20/x
  3. Step 3: Cross multiply
    105,015.51x = 144,915.71 × 59,687.20
  4. Step 4: Simplify right side
    105,015.51x = 8,649,613,424.07
  5. Step 5: Solve for x
    x = 8,649,613,424.07/105,015.51
  6. Step 6: Final answer
    x = 82,365.10

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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.