Home / 103,509.10-155,152.91-53,538.89

Finding the Fourth Proportional to 103,509.10, 155,152.91 and 53,538.89

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Solution

The fourth proportional to 103,509.10, 155,152.91 and 53,538.89 is: 80,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,509.10 : 155,152.91 = 53,538.89 : x
  2. Step 2: Convert to fraction form
    103,509.10/155,152.91 = 53,538.89/x
  3. Step 3: Cross multiply
    103,509.10x = 155,152.91 × 53,538.89
  4. Step 4: Simplify right side
    103,509.10x = 8,306,713,939.75
  5. Step 5: Solve for x
    x = 8,306,713,939.75/103,509.10
  6. Step 6: Final answer
    x = 80,251.05

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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.