Home / 111,683.16-154,123.26-61,385.40

Finding the Fourth Proportional to 111,683.16, 154,123.26 and 61,385.40

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Solution

The fourth proportional to 111,683.16, 154,123.26 and 61,385.40 is: 84,712.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,683.16 : 154,123.26 = 61,385.40 : x
  2. Step 2: Convert to fraction form
    111,683.16/154,123.26 = 61,385.40/x
  3. Step 3: Cross multiply
    111,683.16x = 154,123.26 × 61,385.40
  4. Step 4: Simplify right side
    111,683.16x = 9,460,917,964.40
  5. Step 5: Solve for x
    x = 9,460,917,964.40/111,683.16
  6. Step 6: Final answer
    x = 84,712.13

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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.