Home / 103,863.30-143,350.02-99,130.28

Finding the Fourth Proportional to 103,863.30, 143,350.02 and 99,130.28

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Solution

The fourth proportional to 103,863.30, 143,350.02 and 99,130.28 is: 136,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,863.30 : 143,350.02 = 99,130.28 : x
  2. Step 2: Convert to fraction form
    103,863.30/143,350.02 = 99,130.28/x
  3. Step 3: Cross multiply
    103,863.30x = 143,350.02 × 99,130.28
  4. Step 4: Simplify right side
    103,863.30x = 14,210,327,620.61
  5. Step 5: Solve for x
    x = 14,210,327,620.61/103,863.30
  6. Step 6: Final answer
    x = 136,817.60

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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.