Home / 103,421.07-155,140.55-28,541.23

Finding the Fourth Proportional to 103,421.07, 155,140.55 and 28,541.23

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Solution

The fourth proportional to 103,421.07, 155,140.55 and 28,541.23 is: 42,814.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,421.07 : 155,140.55 = 28,541.23 : x
  2. Step 2: Convert to fraction form
    103,421.07/155,140.55 = 28,541.23/x
  3. Step 3: Cross multiply
    103,421.07x = 155,140.55 × 28,541.23
  4. Step 4: Simplify right side
    103,421.07x = 4,427,901,696.35
  5. Step 5: Solve for x
    x = 4,427,901,696.35/103,421.07
  6. Step 6: Final answer
    x = 42,814.31

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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.