Home / 103,400.60-142,689.14-63,181.67

Finding the Fourth Proportional to 103,400.60, 142,689.14 and 63,181.67

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Solution

The fourth proportional to 103,400.60, 142,689.14 and 63,181.67 is: 87,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,400.60 : 142,689.14 = 63,181.67 : x
  2. Step 2: Convert to fraction form
    103,400.60/142,689.14 = 63,181.67/x
  3. Step 3: Cross multiply
    103,400.60x = 142,689.14 × 63,181.67
  4. Step 4: Simplify right side
    103,400.60x = 9,015,338,521.66
  5. Step 5: Solve for x
    x = 9,015,338,521.66/103,400.60
  6. Step 6: Final answer
    x = 87,188.45

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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.