Home / 153,397.18-211,637.37-89,689.87

Finding the Fourth Proportional to 153,397.18, 211,637.37 and 89,689.87

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Solution

The fourth proportional to 153,397.18, 211,637.37 and 89,689.87 is: 123,742.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,397.18 : 211,637.37 = 89,689.87 : x
  2. Step 2: Convert to fraction form
    153,397.18/211,637.37 = 89,689.87/x
  3. Step 3: Cross multiply
    153,397.18x = 211,637.37 × 89,689.87
  4. Step 4: Simplify right side
    153,397.18x = 18,981,728,202.44
  5. Step 5: Solve for x
    x = 18,981,728,202.44/153,397.18
  6. Step 6: Final answer
    x = 123,742.35

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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.