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Finding the Fourth Proportional to 139,373.95, 208,792.26 and 83,258.98

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Solution

The fourth proportional to 139,373.95, 208,792.26 and 83,258.98 is: 124,727.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,373.95 : 208,792.26 = 83,258.98 : x
  2. Step 2: Convert to fraction form
    139,373.95/208,792.26 = 83,258.98/x
  3. Step 3: Cross multiply
    139,373.95x = 208,792.26 × 83,258.98
  4. Step 4: Simplify right side
    139,373.95x = 17,383,830,599.49
  5. Step 5: Solve for x
    x = 17,383,830,599.49/139,373.95
  6. Step 6: Final answer
    x = 124,727.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.