Home / 101,239.84-139,700.64-58,807.36

Finding the Fourth Proportional to 101,239.84, 139,700.64 and 58,807.36

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Solution

The fourth proportional to 101,239.84, 139,700.64 and 58,807.36 is: 81,148.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,239.84 : 139,700.64 = 58,807.36 : x
  2. Step 2: Convert to fraction form
    101,239.84/139,700.64 = 58,807.36/x
  3. Step 3: Cross multiply
    101,239.84x = 139,700.64 × 58,807.36
  4. Step 4: Simplify right side
    101,239.84x = 8,215,425,828.71
  5. Step 5: Solve for x
    x = 8,215,425,828.71/101,239.84
  6. Step 6: Final answer
    x = 81,148.15

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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.