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Finding the Fourth Proportional to 153,903.80, 230,726.10 and 80,031.80

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Solution

The fourth proportional to 153,903.80, 230,726.10 and 80,031.80 is: 119,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,903.80 : 230,726.10 = 80,031.80 : x
  2. Step 2: Convert to fraction form
    153,903.80/230,726.10 = 80,031.80/x
  3. Step 3: Cross multiply
    153,903.80x = 230,726.10 × 80,031.80
  4. Step 4: Simplify right side
    153,903.80x = 18,465,425,089.98
  5. Step 5: Solve for x
    x = 18,465,425,089.98/153,903.80
  6. Step 6: Final answer
    x = 119,980.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.