Home / 88,178.05-121,720.61-61,336.14

Finding the Fourth Proportional to 88,178.05, 121,720.61 and 61,336.14

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Solution

The fourth proportional to 88,178.05, 121,720.61 and 61,336.14 is: 84,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,178.05 : 121,720.61 = 61,336.14 : x
  2. Step 2: Convert to fraction form
    88,178.05/121,720.61 = 61,336.14/x
  3. Step 3: Cross multiply
    88,178.05x = 121,720.61 × 61,336.14
  4. Step 4: Simplify right side
    88,178.05x = 7,465,871,727.72
  5. Step 5: Solve for x
    x = 7,465,871,727.72/88,178.05
  6. Step 6: Final answer
    x = 84,668.14

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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.