Home / 100,830.29-139,099.60-60,474.68

Finding the Fourth Proportional to 100,830.29, 139,099.60 and 60,474.68

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Solution

The fourth proportional to 100,830.29, 139,099.60 and 60,474.68 is: 83,427.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,830.29 : 139,099.60 = 60,474.68 : x
  2. Step 2: Convert to fraction form
    100,830.29/139,099.60 = 60,474.68/x
  3. Step 3: Cross multiply
    100,830.29x = 139,099.60 × 60,474.68
  4. Step 4: Simplify right side
    100,830.29x = 8,412,003,798.13
  5. Step 5: Solve for x
    x = 8,412,003,798.13/100,830.29
  6. Step 6: Final answer
    x = 83,427.35

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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.