Home / 100,783.33-139,077.51-55,457.08

Finding the Fourth Proportional to 100,783.33, 139,077.51 and 55,457.08

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Solution

The fourth proportional to 100,783.33, 139,077.51 and 55,457.08 is: 76,528.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,783.33 : 139,077.51 = 55,457.08 : x
  2. Step 2: Convert to fraction form
    100,783.33/139,077.51 = 55,457.08/x
  3. Step 3: Cross multiply
    100,783.33x = 139,077.51 × 55,457.08
  4. Step 4: Simplify right side
    100,783.33x = 7,712,832,389.22
  5. Step 5: Solve for x
    x = 7,712,832,389.22/100,783.33
  6. Step 6: Final answer
    x = 76,528.85

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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.