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Finding the Fourth Proportional to 148,117.68, 204,189.76 and 105,602.40

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Solution

The fourth proportional to 148,117.68, 204,189.76 and 105,602.40 is: 145,579.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,117.68 : 204,189.76 = 105,602.40 : x
  2. Step 2: Convert to fraction form
    148,117.68/204,189.76 = 105,602.40/x
  3. Step 3: Cross multiply
    148,117.68x = 204,189.76 × 105,602.40
  4. Step 4: Simplify right side
    148,117.68x = 21,562,928,711.42
  5. Step 5: Solve for x
    x = 21,562,928,711.42/148,117.68
  6. Step 6: Final answer
    x = 145,579.71

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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.