Home / 146,642.07-202,457.78-100,780.71

Finding the Fourth Proportional to 146,642.07, 202,457.78 and 100,780.71

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Solution

The fourth proportional to 146,642.07, 202,457.78 and 100,780.71 is: 139,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,642.07 : 202,457.78 = 100,780.71 : x
  2. Step 2: Convert to fraction form
    146,642.07/202,457.78 = 100,780.71/x
  3. Step 3: Cross multiply
    146,642.07x = 202,457.78 × 100,780.71
  4. Step 4: Simplify right side
    146,642.07x = 20,403,838,309.52
  5. Step 5: Solve for x
    x = 20,403,838,309.52/146,642.07
  6. Step 6: Final answer
    x = 139,140.41

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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.