Home / 101,385.72-139,929.65-58,968.85

Finding the Fourth Proportional to 101,385.72, 139,929.65 and 58,968.85

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Solution

The fourth proportional to 101,385.72, 139,929.65 and 58,968.85 is: 81,387.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,385.72 : 139,929.65 = 58,968.85 : x
  2. Step 2: Convert to fraction form
    101,385.72/139,929.65 = 58,968.85/x
  3. Step 3: Cross multiply
    101,385.72x = 139,929.65 × 58,968.85
  4. Step 4: Simplify right side
    101,385.72x = 8,251,490,541.40
  5. Step 5: Solve for x
    x = 8,251,490,541.40/101,385.72
  6. Step 6: Final answer
    x = 81,387.11

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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.