Home / 103,623.10-155,473.05-99,783.10

Finding the Fourth Proportional to 103,623.10, 155,473.05 and 99,783.10

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Solution

The fourth proportional to 103,623.10, 155,473.05 and 99,783.10 is: 149,711.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.10 : 155,473.05 = 99,783.10 : x
  2. Step 2: Convert to fraction form
    103,623.10/155,473.05 = 99,783.10/x
  3. Step 3: Cross multiply
    103,623.10x = 155,473.05 × 99,783.10
  4. Step 4: Simplify right side
    103,623.10x = 15,513,582,895.46
  5. Step 5: Solve for x
    x = 15,513,582,895.46/103,623.10
  6. Step 6: Final answer
    x = 149,711.63

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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.