Home / 105,136.02-145,091.79-62,693.64

Finding the Fourth Proportional to 105,136.02, 145,091.79 and 62,693.64

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Solution

The fourth proportional to 105,136.02, 145,091.79 and 62,693.64 is: 86,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,136.02 : 145,091.79 = 62,693.64 : x
  2. Step 2: Convert to fraction form
    105,136.02/145,091.79 = 62,693.64/x
  3. Step 3: Cross multiply
    105,136.02x = 145,091.79 × 62,693.64
  4. Step 4: Simplify right side
    105,136.02x = 9,096,332,449.22
  5. Step 5: Solve for x
    x = 9,096,332,449.22/105,136.02
  6. Step 6: Final answer
    x = 86,519.66

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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.