Home / 105,178.95-157,399.00-90,564.39

Finding the Fourth Proportional to 105,178.95, 157,399.00 and 90,564.39

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Solution

The fourth proportional to 105,178.95, 157,399.00 and 90,564.39 is: 135,528.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,178.95 : 157,399.00 = 90,564.39 : x
  2. Step 2: Convert to fraction form
    105,178.95/157,399.00 = 90,564.39/x
  3. Step 3: Cross multiply
    105,178.95x = 157,399.00 × 90,564.39
  4. Step 4: Simplify right side
    105,178.95x = 14,254,744,195.20
  5. Step 5: Solve for x
    x = 14,254,744,195.20/105,178.95
  6. Step 6: Final answer
    x = 135,528.49

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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.