Home / 105,666.64-145,823.70-57,919.98

Finding the Fourth Proportional to 105,666.64, 145,823.70 and 57,919.98

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Solution

The fourth proportional to 105,666.64, 145,823.70 and 57,919.98 is: 79,931.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,666.64 : 145,823.70 = 57,919.98 : x
  2. Step 2: Convert to fraction form
    105,666.64/145,823.70 = 57,919.98/x
  3. Step 3: Cross multiply
    105,666.64x = 145,823.70 × 57,919.98
  4. Step 4: Simplify right side
    105,666.64x = 8,446,105,787.53
  5. Step 5: Solve for x
    x = 8,446,105,787.53/105,666.64
  6. Step 6: Final answer
    x = 79,931.62

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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.