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Finding the Fourth Proportional to 92,117.67, 138,009.65 and 42,239.49

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Solution

The fourth proportional to 92,117.67, 138,009.65 and 42,239.49 is: 63,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,117.67 : 138,009.65 = 42,239.49 : x
  2. Step 2: Convert to fraction form
    92,117.67/138,009.65 = 42,239.49/x
  3. Step 3: Cross multiply
    92,117.67x = 138,009.65 × 42,239.49
  4. Step 4: Simplify right side
    92,117.67x = 5,829,457,019.88
  5. Step 5: Solve for x
    x = 5,829,457,019.88/92,117.67
  6. Step 6: Final answer
    x = 63,282.72

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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.