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Finding the Fourth Proportional to 101,140.40, 139,515.72 and 58,693.52

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Solution

The fourth proportional to 101,140.40, 139,515.72 and 58,693.52 is: 80,963.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,140.40 : 139,515.72 = 58,693.52 : x
  2. Step 2: Convert to fraction form
    101,140.40/139,515.72 = 58,693.52/x
  3. Step 3: Cross multiply
    101,140.40x = 139,515.72 × 58,693.52
  4. Step 4: Simplify right side
    101,140.40x = 8,188,668,702.13
  5. Step 5: Solve for x
    x = 8,188,668,702.13/101,140.40
  6. Step 6: Final answer
    x = 80,963.38

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1.5x scale

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.