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Finding the Fourth Proportional to 142,540.68, 213,750.78 and 42,715.08

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Solution

The fourth proportional to 142,540.68, 213,750.78 and 42,715.08 is: 64,054.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,540.68 : 213,750.78 = 42,715.08 : x
  2. Step 2: Convert to fraction form
    142,540.68/213,750.78 = 42,715.08/x
  3. Step 3: Cross multiply
    142,540.68x = 213,750.78 × 42,715.08
  4. Step 4: Simplify right side
    142,540.68x = 9,130,381,667.76
  5. Step 5: Solve for x
    x = 9,130,381,667.76/142,540.68
  6. Step 6: Final answer
    x = 64,054.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.