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Finding the Fourth Proportional to 187,659.72, 258,905.70 and 107,029.08

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Solution

The fourth proportional to 187,659.72, 258,905.70 and 107,029.08 is: 147,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,659.72 : 258,905.70 = 107,029.08 : x
  2. Step 2: Convert to fraction form
    187,659.72/258,905.70 = 107,029.08/x
  3. Step 3: Cross multiply
    187,659.72x = 258,905.70 × 107,029.08
  4. Step 4: Simplify right side
    187,659.72x = 27,710,438,877.76
  5. Step 5: Solve for x
    x = 27,710,438,877.76/187,659.72
  6. Step 6: Final answer
    x = 147,663.22

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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.