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Finding the Fourth Proportional to 158,505.40, 218,737.14 and 86,885.44

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Solution

The fourth proportional to 158,505.40, 218,737.14 and 86,885.44 is: 119,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,505.40 : 218,737.14 = 86,885.44 : x
  2. Step 2: Convert to fraction form
    158,505.40/218,737.14 = 86,885.44/x
  3. Step 3: Cross multiply
    158,505.40x = 218,737.14 × 86,885.44
  4. Step 4: Simplify right side
    158,505.40x = 19,005,072,653.24
  5. Step 5: Solve for x
    x = 19,005,072,653.24/158,505.40
  6. Step 6: Final answer
    x = 119,901.74

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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.