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Finding the Fourth Proportional to 86,143.34, 118,901.32 and 55,927.10

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Solution

The fourth proportional to 86,143.34, 118,901.32 and 55,927.10 is: 77,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.34 : 118,901.32 = 55,927.10 : x
  2. Step 2: Convert to fraction form
    86,143.34/118,901.32 = 55,927.10/x
  3. Step 3: Cross multiply
    86,143.34x = 118,901.32 × 55,927.10
  4. Step 4: Simplify right side
    86,143.34x = 6,649,806,013.77
  5. Step 5: Solve for x
    x = 6,649,806,013.77/86,143.34
  6. Step 6: Final answer
    x = 77,194.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.