Home / 187,988.58-259,430.85-103,105.98

Finding the Fourth Proportional to 187,988.58, 259,430.85 and 103,105.98

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Solution

The fourth proportional to 187,988.58, 259,430.85 and 103,105.98 is: 142,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,988.58 : 259,430.85 = 103,105.98 : x
  2. Step 2: Convert to fraction form
    187,988.58/259,430.85 = 103,105.98/x
  3. Step 3: Cross multiply
    187,988.58x = 259,430.85 × 103,105.98
  4. Step 4: Simplify right side
    187,988.58x = 26,748,872,031.48
  5. Step 5: Solve for x
    x = 26,748,872,031.48/187,988.58
  6. Step 6: Final answer
    x = 142,289.88

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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.