Home / 153,201.72-211,448.70-99,411.24

Finding the Fourth Proportional to 153,201.72, 211,448.70 and 99,411.24

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Solution

The fourth proportional to 153,201.72, 211,448.70 and 99,411.24 is: 137,207.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,201.72 : 211,448.70 = 99,411.24 : x
  2. Step 2: Convert to fraction form
    153,201.72/211,448.70 = 99,411.24/x
  3. Step 3: Cross multiply
    153,201.72x = 211,448.70 × 99,411.24
  4. Step 4: Simplify right side
    153,201.72x = 21,020,377,463.39
  5. Step 5: Solve for x
    x = 21,020,377,463.39/153,201.72
  6. Step 6: Final answer
    x = 137,207.19

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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.