Home / 115,237.80-172,856.70-109,535.40

Finding the Fourth Proportional to 115,237.80, 172,856.70 and 109,535.40

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Solution

The fourth proportional to 115,237.80, 172,856.70 and 109,535.40 is: 164,303.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,237.80 : 172,856.70 = 109,535.40 : x
  2. Step 2: Convert to fraction form
    115,237.80/172,856.70 = 109,535.40/x
  3. Step 3: Cross multiply
    115,237.80x = 172,856.70 × 109,535.40
  4. Step 4: Simplify right side
    115,237.80x = 18,933,927,777.18
  5. Step 5: Solve for x
    x = 18,933,927,777.18/115,237.80
  6. Step 6: Final answer
    x = 164,303.10

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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.