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Finding the Fourth Proportional to 123,885.68, 170,957.40 and 70,173.68

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Solution

The fourth proportional to 123,885.68, 170,957.40 and 70,173.68 is: 96,836.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,885.68 : 170,957.40 = 70,173.68 : x
  2. Step 2: Convert to fraction form
    123,885.68/170,957.40 = 70,173.68/x
  3. Step 3: Cross multiply
    123,885.68x = 170,957.40 × 70,173.68
  4. Step 4: Simplify right side
    123,885.68x = 11,996,709,881.23
  5. Step 5: Solve for x
    x = 11,996,709,881.23/123,885.68
  6. Step 6: Final answer
    x = 96,836.94

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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.