Home / 103,518.40-155,277.60-70,057.30

Finding the Fourth Proportional to 103,518.40, 155,277.60 and 70,057.30

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Solution

The fourth proportional to 103,518.40, 155,277.60 and 70,057.30 is: 105,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,518.40 : 155,277.60 = 70,057.30 : x
  2. Step 2: Convert to fraction form
    103,518.40/155,277.60 = 70,057.30/x
  3. Step 3: Cross multiply
    103,518.40x = 155,277.60 × 70,057.30
  4. Step 4: Simplify right side
    103,518.40x = 10,878,329,406.48
  5. Step 5: Solve for x
    x = 10,878,329,406.48/103,518.40
  6. Step 6: Final answer
    x = 105,085.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.