Home / 138,571.98-191,215.05-102,292.74

Finding the Fourth Proportional to 138,571.98, 191,215.05 and 102,292.74

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Solution

The fourth proportional to 138,571.98, 191,215.05 and 102,292.74 is: 141,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,571.98 : 191,215.05 = 102,292.74 : x
  2. Step 2: Convert to fraction form
    138,571.98/191,215.05 = 102,292.74/x
  3. Step 3: Cross multiply
    138,571.98x = 191,215.05 × 102,292.74
  4. Step 4: Simplify right side
    138,571.98x = 19,559,911,393.74
  5. Step 5: Solve for x
    x = 19,559,911,393.74/138,571.98
  6. Step 6: Final answer
    x = 141,153.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.