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Finding the Fourth Proportional to 97,158.68, 145,560.43 and 70,438.43

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Solution

The fourth proportional to 97,158.68, 145,560.43 and 70,438.43 is: 105,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,158.68 : 145,560.43 = 70,438.43 : x
  2. Step 2: Convert to fraction form
    97,158.68/145,560.43 = 70,438.43/x
  3. Step 3: Cross multiply
    97,158.68x = 145,560.43 × 70,438.43
  4. Step 4: Simplify right side
    97,158.68x = 10,253,048,159.32
  5. Step 5: Solve for x
    x = 10,253,048,159.32/97,158.68
  6. Step 6: Final answer
    x = 105,528.90

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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.