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Finding the Fourth Proportional to 148,656.48, 205,146.50 and 80,673.45

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Solution

The fourth proportional to 148,656.48, 205,146.50 and 80,673.45 is: 111,329.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,656.48 : 205,146.50 = 80,673.45 : x
  2. Step 2: Convert to fraction form
    148,656.48/205,146.50 = 80,673.45/x
  3. Step 3: Cross multiply
    148,656.48x = 205,146.50 × 80,673.45
  4. Step 4: Simplify right side
    148,656.48x = 16,549,875,507.06
  5. Step 5: Solve for x
    x = 16,549,875,507.06/148,656.48
  6. Step 6: Final answer
    x = 111,329.66

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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.