Home / 103,519.04-155,279.10-28,639.40

Finding the Fourth Proportional to 103,519.04, 155,279.10 and 28,639.40

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Solution

The fourth proportional to 103,519.04, 155,279.10 and 28,639.40 is: 42,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,519.04 : 155,279.10 = 28,639.40 : x
  2. Step 2: Convert to fraction form
    103,519.04/155,279.10 = 28,639.40/x
  3. Step 3: Cross multiply
    103,519.04x = 155,279.10 × 28,639.40
  4. Step 4: Simplify right side
    103,519.04x = 4,447,100,256.54
  5. Step 5: Solve for x
    x = 4,447,100,256.54/103,519.04
  6. Step 6: Final answer
    x = 42,959.25

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1.5x scale

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.