Home / 135,615.16-187,159.96-75,204.72

Finding the Fourth Proportional to 135,615.16, 187,159.96 and 75,204.72

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Solution

The fourth proportional to 135,615.16, 187,159.96 and 75,204.72 is: 103,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,615.16 : 187,159.96 = 75,204.72 : x
  2. Step 2: Convert to fraction form
    135,615.16/187,159.96 = 75,204.72/x
  3. Step 3: Cross multiply
    135,615.16x = 187,159.96 × 75,204.72
  4. Step 4: Simplify right side
    135,615.16x = 14,075,312,387.01
  5. Step 5: Solve for x
    x = 14,075,312,387.01/135,615.16
  6. Step 6: Final answer
    x = 103,788.64

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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.