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Finding the Fourth Proportional to 92,740.95, 139,806.45 and 86,561.46

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Solution

The fourth proportional to 92,740.95, 139,806.45 and 86,561.46 is: 130,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,740.95 : 139,806.45 = 86,561.46 : x
  2. Step 2: Convert to fraction form
    92,740.95/139,806.45 = 86,561.46/x
  3. Step 3: Cross multiply
    92,740.95x = 139,806.45 × 86,561.46
  4. Step 4: Simplify right side
    92,740.95x = 12,101,850,429.42
  5. Step 5: Solve for x
    x = 12,101,850,429.42/92,740.95
  6. Step 6: Final answer
    x = 130,490.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.