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Finding the Fourth Proportional to 111,762.12, 154,228.65 and 61,461.12

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Solution

The fourth proportional to 111,762.12, 154,228.65 and 61,461.12 is: 84,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,762.12 : 154,228.65 = 61,461.12 : x
  2. Step 2: Convert to fraction form
    111,762.12/154,228.65 = 61,461.12/x
  3. Step 3: Cross multiply
    111,762.12x = 154,228.65 × 61,461.12
  4. Step 4: Simplify right side
    111,762.12x = 9,479,065,565.09
  5. Step 5: Solve for x
    x = 9,479,065,565.09/111,762.12
  6. Step 6: Final answer
    x = 84,814.65

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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.