Home / 135,312.10-186,726.09-74,885.29

Finding the Fourth Proportional to 135,312.10, 186,726.09 and 74,885.29

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Solution

The fourth proportional to 135,312.10, 186,726.09 and 74,885.29 is: 103,339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,312.10 : 186,726.09 = 74,885.29 : x
  2. Step 2: Convert to fraction form
    135,312.10/186,726.09 = 74,885.29/x
  3. Step 3: Cross multiply
    135,312.10x = 186,726.09 × 74,885.29
  4. Step 4: Simplify right side
    135,312.10x = 13,983,037,400.22
  5. Step 5: Solve for x
    x = 13,983,037,400.22/135,312.10
  6. Step 6: Final answer
    x = 103,339.15

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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.