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Finding the Fourth Proportional to 98,955.39, 148,429.44 and 42,809.63

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Solution

The fourth proportional to 98,955.39, 148,429.44 and 42,809.63 is: 64,212.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,955.39 : 148,429.44 = 42,809.63 : x
  2. Step 2: Convert to fraction form
    98,955.39/148,429.44 = 42,809.63/x
  3. Step 3: Cross multiply
    98,955.39x = 148,429.44 × 42,809.63
  4. Step 4: Simplify right side
    98,955.39x = 6,354,209,193.46
  5. Step 5: Solve for x
    x = 6,354,209,193.46/98,955.39
  6. Step 6: Final answer
    x = 64,212.87

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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.