Home / 138,566.61-191,222.07-74,904.42

Finding the Fourth Proportional to 138,566.61, 191,222.07 and 74,904.42

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Solution

The fourth proportional to 138,566.61, 191,222.07 and 74,904.42 is: 103,368.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,566.61 : 191,222.07 = 74,904.42 : x
  2. Step 2: Convert to fraction form
    138,566.61/191,222.07 = 74,904.42/x
  3. Step 3: Cross multiply
    138,566.61x = 191,222.07 × 74,904.42
  4. Step 4: Simplify right side
    138,566.61x = 14,323,378,244.55
  5. Step 5: Solve for x
    x = 14,323,378,244.55/138,566.61
  6. Step 6: Final answer
    x = 103,368.18

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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.