Home / 138,904.53-191,688.06-75,242.58

Finding the Fourth Proportional to 138,904.53, 191,688.06 and 75,242.58

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Solution

The fourth proportional to 138,904.53, 191,688.06 and 75,242.58 is: 103,834.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,904.53 : 191,688.06 = 75,242.58 : x
  2. Step 2: Convert to fraction form
    138,904.53/191,688.06 = 75,242.58/x
  3. Step 3: Cross multiply
    138,904.53x = 191,688.06 × 75,242.58
  4. Step 4: Simplify right side
    138,904.53x = 14,423,104,189.59
  5. Step 5: Solve for x
    x = 14,423,104,189.59/138,904.53
  6. Step 6: Final answer
    x = 103,834.66

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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.