Home / 103,430.73-155,143.01-28,555.45

Finding the Fourth Proportional to 103,430.73, 155,143.01 and 28,555.45

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Solution

The fourth proportional to 103,430.73, 155,143.01 and 28,555.45 is: 42,832.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,430.73 : 155,143.01 = 28,555.45 : x
  2. Step 2: Convert to fraction form
    103,430.73/155,143.01 = 28,555.45/x
  3. Step 3: Cross multiply
    103,430.73x = 155,143.01 × 28,555.45
  4. Step 4: Simplify right side
    103,430.73x = 4,430,178,464.90
  5. Step 5: Solve for x
    x = 4,430,178,464.90/103,430.73
  6. Step 6: Final answer
    x = 42,832.32

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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.