Home / 102,931.36-142,035.24-57,606.64

Finding the Fourth Proportional to 102,931.36, 142,035.24 and 57,606.64

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Solution

The fourth proportional to 102,931.36, 142,035.24 and 57,606.64 is: 79,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,931.36 : 142,035.24 = 57,606.64 : x
  2. Step 2: Convert to fraction form
    102,931.36/142,035.24 = 57,606.64/x
  3. Step 3: Cross multiply
    102,931.36x = 142,035.24 × 57,606.64
  4. Step 4: Simplify right side
    102,931.36x = 8,182,172,937.99
  5. Step 5: Solve for x
    x = 8,182,172,937.99/102,931.36
  6. Step 6: Final answer
    x = 79,491.55

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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.