Home / 153,107.16-211,329.45-99,389.04

Finding the Fourth Proportional to 153,107.16, 211,329.45 and 99,389.04

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Solution

The fourth proportional to 153,107.16, 211,329.45 and 99,389.04 is: 137,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,107.16 : 211,329.45 = 99,389.04 : x
  2. Step 2: Convert to fraction form
    153,107.16/211,329.45 = 99,389.04/x
  3. Step 3: Cross multiply
    153,107.16x = 211,329.45 × 99,389.04
  4. Step 4: Simplify right side
    153,107.16x = 21,003,831,159.23
  5. Step 5: Solve for x
    x = 21,003,831,159.23/153,107.16
  6. Step 6: Final answer
    x = 137,183.86

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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.