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Finding the Fourth Proportional to 92,543.61, 138,465.45 and 86,944.89

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Solution

The fourth proportional to 92,543.61, 138,465.45 and 86,944.89 is: 130,088.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,543.61 : 138,465.45 = 86,944.89 : x
  2. Step 2: Convert to fraction form
    92,543.61/138,465.45 = 86,944.89/x
  3. Step 3: Cross multiply
    92,543.61x = 138,465.45 × 86,944.89
  4. Step 4: Simplify right side
    92,543.61x = 12,038,863,319.05
  5. Step 5: Solve for x
    x = 12,038,863,319.05/92,543.61
  6. Step 6: Final answer
    x = 130,088.54

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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.