Home / 128,637.96-177,522.27-74,921.58

Finding the Fourth Proportional to 128,637.96, 177,522.27 and 74,921.58

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Solution

The fourth proportional to 128,637.96, 177,522.27 and 74,921.58 is: 103,392.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,637.96 : 177,522.27 = 74,921.58 : x
  2. Step 2: Convert to fraction form
    128,637.96/177,522.27 = 74,921.58/x
  3. Step 3: Cross multiply
    128,637.96x = 177,522.27 × 74,921.58
  4. Step 4: Simplify right side
    128,637.96x = 13,300,248,953.59
  5. Step 5: Solve for x
    x = 13,300,248,953.59/128,637.96
  6. Step 6: Final answer
    x = 103,392.88

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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.