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Finding the Fourth Proportional to 187,462.96, 258,697.80 and 101,421.72

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Solution

The fourth proportional to 187,462.96, 258,697.80 and 101,421.72 is: 139,961.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,462.96 : 258,697.80 = 101,421.72 : x
  2. Step 2: Convert to fraction form
    187,462.96/258,697.80 = 101,421.72/x
  3. Step 3: Cross multiply
    187,462.96x = 258,697.80 × 101,421.72
  4. Step 4: Simplify right side
    187,462.96x = 26,237,575,836.22
  5. Step 5: Solve for x
    x = 26,237,575,836.22/187,462.96
  6. Step 6: Final answer
    x = 139,961.39

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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.