Home / 111,985.15-154,533.67-69,542.77

Finding the Fourth Proportional to 111,985.15, 154,533.67 and 69,542.77

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Solution

The fourth proportional to 111,985.15, 154,533.67 and 69,542.77 is: 95,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,985.15 : 154,533.67 = 69,542.77 : x
  2. Step 2: Convert to fraction form
    111,985.15/154,533.67 = 69,542.77/x
  3. Step 3: Cross multiply
    111,985.15x = 154,533.67 × 69,542.77
  4. Step 4: Simplify right side
    111,985.15x = 10,746,699,470.07
  5. Step 5: Solve for x
    x = 10,746,699,470.07/111,985.15
  6. Step 6: Final answer
    x = 95,965.40

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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.