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Finding the Fourth Proportional to 92,292.90, 138,439.35 and 75,890.40

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Solution

The fourth proportional to 92,292.90, 138,439.35 and 75,890.40 is: 113,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,292.90 : 138,439.35 = 75,890.40 : x
  2. Step 2: Convert to fraction form
    92,292.90/138,439.35 = 75,890.40/x
  3. Step 3: Cross multiply
    92,292.90x = 138,439.35 × 75,890.40
  4. Step 4: Simplify right side
    92,292.90x = 10,506,217,647.24
  5. Step 5: Solve for x
    x = 10,506,217,647.24/92,292.90
  6. Step 6: Final answer
    x = 113,835.60

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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.