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Finding the Fourth Proportional to 187,190.40, 258,307.20 and 102,307.20

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Solution

The fourth proportional to 187,190.40, 258,307.20 and 102,307.20 is: 141,175.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,190.40 : 258,307.20 = 102,307.20 : x
  2. Step 2: Convert to fraction form
    187,190.40/258,307.20 = 102,307.20/x
  3. Step 3: Cross multiply
    187,190.40x = 258,307.20 × 102,307.20
  4. Step 4: Simplify right side
    187,190.40x = 26,426,686,371.84
  5. Step 5: Solve for x
    x = 26,426,686,371.84/187,190.40
  6. Step 6: Final answer
    x = 141,175.44

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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.