Home / 131,438.54-197,569.40-86,747.13

Finding the Fourth Proportional to 131,438.54, 197,569.40 and 86,747.13

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Solution

The fourth proportional to 131,438.54, 197,569.40 and 86,747.13 is: 130,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,438.54 : 197,569.40 = 86,747.13 : x
  2. Step 2: Convert to fraction form
    131,438.54/197,569.40 = 86,747.13/x
  3. Step 3: Cross multiply
    131,438.54x = 197,569.40 × 86,747.13
  4. Step 4: Simplify right side
    131,438.54x = 17,138,577,437.98
  5. Step 5: Solve for x
    x = 17,138,577,437.98/131,438.54
  6. Step 6: Final answer
    x = 130,392.33

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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.