Home / 100,900.57-139,246.47-62,681.22

Finding the Fourth Proportional to 100,900.57, 139,246.47 and 62,681.22

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Solution

The fourth proportional to 100,900.57, 139,246.47 and 62,681.22 is: 86,502.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,900.57 : 139,246.47 = 62,681.22 : x
  2. Step 2: Convert to fraction form
    100,900.57/139,246.47 = 62,681.22/x
  3. Step 3: Cross multiply
    100,900.57x = 139,246.47 × 62,681.22
  4. Step 4: Simplify right side
    100,900.57x = 8,728,138,620.29
  5. Step 5: Solve for x
    x = 8,728,138,620.29/100,900.57
  6. Step 6: Final answer
    x = 86,502.37

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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.