Home / 131,509.17-197,313.45-78,955.29

Finding the Fourth Proportional to 131,509.17, 197,313.45 and 78,955.29

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Solution

The fourth proportional to 131,509.17, 197,313.45 and 78,955.29 is: 118,462.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,509.17 : 197,313.45 = 78,955.29 : x
  2. Step 2: Convert to fraction form
    131,509.17/197,313.45 = 78,955.29/x
  3. Step 3: Cross multiply
    131,509.17x = 197,313.45 × 78,955.29
  4. Step 4: Simplify right side
    131,509.17x = 15,578,940,665.65
  5. Step 5: Solve for x
    x = 15,578,940,665.65/131,509.17
  6. Step 6: Final answer
    x = 118,462.77

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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.