Home / 138,946.80-191,746.63-75,284.59

Finding the Fourth Proportional to 138,946.80, 191,746.63 and 75,284.59

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Solution

The fourth proportional to 138,946.80, 191,746.63 and 75,284.59 is: 103,892.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,946.80 : 191,746.63 = 75,284.59 : x
  2. Step 2: Convert to fraction form
    138,946.80/191,746.63 = 75,284.59/x
  3. Step 3: Cross multiply
    138,946.80x = 191,746.63 × 75,284.59
  4. Step 4: Simplify right side
    138,946.80x = 14,435,566,423.43
  5. Step 5: Solve for x
    x = 14,435,566,423.43/138,946.80
  6. Step 6: Final answer
    x = 103,892.76

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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.