Home / 98,938.72-136,460.64-68,723.92

Finding the Fourth Proportional to 98,938.72, 136,460.64 and 68,723.92

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Solution

The fourth proportional to 98,938.72, 136,460.64 and 68,723.92 is: 94,787.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,938.72 : 136,460.64 = 68,723.92 : x
  2. Step 2: Convert to fraction form
    98,938.72/136,460.64 = 68,723.92/x
  3. Step 3: Cross multiply
    98,938.72x = 136,460.64 × 68,723.92
  4. Step 4: Simplify right side
    98,938.72x = 9,378,110,106.51
  5. Step 5: Solve for x
    x = 9,378,110,106.51/98,938.72
  6. Step 6: Final answer
    x = 94,787.06

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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.