Home / 111,613.16-154,033.70-61,312.68

Finding the Fourth Proportional to 111,613.16, 154,033.70 and 61,312.68

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Solution

The fourth proportional to 111,613.16, 154,033.70 and 61,312.68 is: 84,615.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,613.16 : 154,033.70 = 61,312.68 : x
  2. Step 2: Convert to fraction form
    111,613.16/154,033.70 = 61,312.68/x
  3. Step 3: Cross multiply
    111,613.16x = 154,033.70 × 61,312.68
  4. Step 4: Simplify right side
    111,613.16x = 9,444,218,957.32
  5. Step 5: Solve for x
    x = 9,444,218,957.32/111,613.16
  6. Step 6: Final answer
    x = 84,615.64

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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.