Home / 187,012.53-258,073.70-102,130.20

Finding the Fourth Proportional to 187,012.53, 258,073.70 and 102,130.20

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Solution

The fourth proportional to 187,012.53, 258,073.70 and 102,130.20 is: 140,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,012.53 : 258,073.70 = 102,130.20 : x
  2. Step 2: Convert to fraction form
    187,012.53/258,073.70 = 102,130.20/x
  3. Step 3: Cross multiply
    187,012.53x = 258,073.70 × 102,130.20
  4. Step 4: Simplify right side
    187,012.53x = 26,357,118,085.09
  5. Step 5: Solve for x
    x = 26,357,118,085.09/187,012.53
  6. Step 6: Final answer
    x = 140,937.71

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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.