Home / 103,478.24-142,686.96-69,885.92

Finding the Fourth Proportional to 103,478.24, 142,686.96 and 69,885.92

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Solution

The fourth proportional to 103,478.24, 142,686.96 and 69,885.92 is: 96,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,478.24 : 142,686.96 = 69,885.92 : x
  2. Step 2: Convert to fraction form
    103,478.24/142,686.96 = 69,885.92/x
  3. Step 3: Cross multiply
    103,478.24x = 142,686.96 × 69,885.92
  4. Step 4: Simplify right side
    103,478.24x = 9,971,809,471.60
  5. Step 5: Solve for x
    x = 9,971,809,471.60/103,478.24
  6. Step 6: Final answer
    x = 96,366.25

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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.