Home / 99,701.06-137,509.66-63,894.40

Finding the Fourth Proportional to 99,701.06, 137,509.66 and 63,894.40

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Solution

The fourth proportional to 99,701.06, 137,509.66 and 63,894.40 is: 88,124.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,701.06 : 137,509.66 = 63,894.40 : x
  2. Step 2: Convert to fraction form
    99,701.06/137,509.66 = 63,894.40/x
  3. Step 3: Cross multiply
    99,701.06x = 137,509.66 × 63,894.40
  4. Step 4: Simplify right side
    99,701.06x = 8,786,097,219.90
  5. Step 5: Solve for x
    x = 8,786,097,219.90/99,701.06
  6. Step 6: Final answer
    x = 88,124.41

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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.