Home / 103,865.64-143,342.79-57,931.81

Finding the Fourth Proportional to 103,865.64, 143,342.79 and 57,931.81

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Solution

The fourth proportional to 103,865.64, 143,342.79 and 57,931.81 is: 79,950.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,865.64 : 143,342.79 = 57,931.81 : x
  2. Step 2: Convert to fraction form
    103,865.64/143,342.79 = 57,931.81/x
  3. Step 3: Cross multiply
    103,865.64x = 143,342.79 × 57,931.81
  4. Step 4: Simplify right side
    103,865.64x = 8,304,107,275.15
  5. Step 5: Solve for x
    x = 8,304,107,275.15/103,865.64
  6. Step 6: Final answer
    x = 79,950.48

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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.