Home / 138,877.13-191,597.58-102,665.51

Finding the Fourth Proportional to 138,877.13, 191,597.58 and 102,665.51

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Solution

The fourth proportional to 138,877.13, 191,597.58 and 102,665.51 is: 141,639.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,877.13 : 191,597.58 = 102,665.51 : x
  2. Step 2: Convert to fraction form
    138,877.13/191,597.58 = 102,665.51/x
  3. Step 3: Cross multiply
    138,877.13x = 191,597.58 × 102,665.51
  4. Step 4: Simplify right side
    138,877.13x = 19,670,463,744.46
  5. Step 5: Solve for x
    x = 19,670,463,744.46/138,877.13
  6. Step 6: Final answer
    x = 141,639.34

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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.