Home / 135,146.30-186,487.61-74,707.20

Finding the Fourth Proportional to 135,146.30, 186,487.61 and 74,707.20

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Solution

The fourth proportional to 135,146.30, 186,487.61 and 74,707.20 is: 103,088.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,146.30 : 186,487.61 = 74,707.20 : x
  2. Step 2: Convert to fraction form
    135,146.30/186,487.61 = 74,707.20/x
  3. Step 3: Cross multiply
    135,146.30x = 186,487.61 × 74,707.20
  4. Step 4: Simplify right side
    135,146.30x = 13,931,966,804.26
  5. Step 5: Solve for x
    x = 13,931,966,804.26/135,146.30
  6. Step 6: Final answer
    x = 103,088.04

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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.