Home / 135,557.42-187,069.23-75,137.14

Finding the Fourth Proportional to 135,557.42, 187,069.23 and 75,137.14

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Solution

The fourth proportional to 135,557.42, 187,069.23 and 75,137.14 is: 103,689.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,557.42 : 187,069.23 = 75,137.14 : x
  2. Step 2: Convert to fraction form
    135,557.42/187,069.23 = 75,137.14/x
  3. Step 3: Cross multiply
    135,557.42x = 187,069.23 × 75,137.14
  4. Step 4: Simplify right side
    135,557.42x = 14,055,845,988.86
  5. Step 5: Solve for x
    x = 14,055,845,988.86/135,557.42
  6. Step 6: Final answer
    x = 103,689.24

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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.