Home / 137,275.41-189,442.08-79,100.07

Finding the Fourth Proportional to 137,275.41, 189,442.08 and 79,100.07

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Solution

The fourth proportional to 137,275.41, 189,442.08 and 79,100.07 is: 109,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,275.41 : 189,442.08 = 79,100.07 : x
  2. Step 2: Convert to fraction form
    137,275.41/189,442.08 = 79,100.07/x
  3. Step 3: Cross multiply
    137,275.41x = 189,442.08 × 79,100.07
  4. Step 4: Simplify right side
    137,275.41x = 14,984,881,788.95
  5. Step 5: Solve for x
    x = 14,984,881,788.95/137,275.41
  6. Step 6: Final answer
    x = 109,159.26

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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.