Home / 103,645.12-143,073.60-70,130.56

Finding the Fourth Proportional to 103,645.12, 143,073.60 and 70,130.56

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Solution

The fourth proportional to 103,645.12, 143,073.60 and 70,130.56 is: 96,809.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,645.12 : 143,073.60 = 70,130.56 : x
  2. Step 2: Convert to fraction form
    103,645.12/143,073.60 = 70,130.56/x
  3. Step 3: Cross multiply
    103,645.12x = 143,073.60 × 70,130.56
  4. Step 4: Simplify right side
    103,645.12x = 10,033,831,689.22
  5. Step 5: Solve for x
    x = 10,033,831,689.22/103,645.12
  6. Step 6: Final answer
    x = 96,809.49

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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.