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Finding the Fourth Proportional to 187,471.67, 258,709.85 and 101,430.43

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Solution

The fourth proportional to 187,471.67, 258,709.85 and 101,430.43 is: 139,973.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,471.67 : 258,709.85 = 101,430.43 : x
  2. Step 2: Convert to fraction form
    187,471.67/258,709.85 = 101,430.43/x
  3. Step 3: Cross multiply
    187,471.67x = 258,709.85 × 101,430.43
  4. Step 4: Simplify right side
    187,471.67x = 26,241,050,557.17
  5. Step 5: Solve for x
    x = 26,241,050,557.17/187,471.67
  6. Step 6: Final answer
    x = 139,973.42

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1.5x scale

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.