Home / 137,920.35-190,330.24-77,490.95

Finding the Fourth Proportional to 137,920.35, 190,330.24 and 77,490.95

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Solution

The fourth proportional to 137,920.35, 190,330.24 and 77,490.95 is: 106,937.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,920.35 : 190,330.24 = 77,490.95 : x
  2. Step 2: Convert to fraction form
    137,920.35/190,330.24 = 77,490.95/x
  3. Step 3: Cross multiply
    137,920.35x = 190,330.24 × 77,490.95
  4. Step 4: Simplify right side
    137,920.35x = 14,748,872,044.07
  5. Step 5: Solve for x
    x = 14,748,872,044.07/137,920.35
  6. Step 6: Final answer
    x = 106,937.61

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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.