Home / 88,163.84-121,605.72-56,318.60

Finding the Fourth Proportional to 88,163.84, 121,605.72 and 56,318.60

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Solution

The fourth proportional to 88,163.84, 121,605.72 and 56,318.60 is: 77,681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,163.84 : 121,605.72 = 56,318.60 : x
  2. Step 2: Convert to fraction form
    88,163.84/121,605.72 = 56,318.60/x
  3. Step 3: Cross multiply
    88,163.84x = 121,605.72 × 56,318.60
  4. Step 4: Simplify right side
    88,163.84x = 6,848,663,902.39
  5. Step 5: Solve for x
    x = 6,848,663,902.39/88,163.84
  6. Step 6: Final answer
    x = 77,681.10

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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.