Home / 115,878.32-159,877.68-64,886.48

Finding the Fourth Proportional to 115,878.32, 159,877.68 and 64,886.48

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Solution

The fourth proportional to 115,878.32, 159,877.68 and 64,886.48 is: 89,524.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,878.32 : 159,877.68 = 64,886.48 : x
  2. Step 2: Convert to fraction form
    115,878.32/159,877.68 = 64,886.48/x
  3. Step 3: Cross multiply
    115,878.32x = 159,877.68 × 64,886.48
  4. Step 4: Simplify right side
    115,878.32x = 10,373,899,885.77
  5. Step 5: Solve for x
    x = 10,373,899,885.77/115,878.32
  6. Step 6: Final answer
    x = 89,524.08

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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.