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Finding the Fourth Proportional to 102,608.61, 141,602.28 and 64,369.77

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Solution

The fourth proportional to 102,608.61, 141,602.28 and 64,369.77 is: 88,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,608.61 : 141,602.28 = 64,369.77 : x
  2. Step 2: Convert to fraction form
    102,608.61/141,602.28 = 64,369.77/x
  3. Step 3: Cross multiply
    102,608.61x = 141,602.28 × 64,369.77
  4. Step 4: Simplify right side
    102,608.61x = 9,114,906,195.08
  5. Step 5: Solve for x
    x = 9,114,906,195.08/102,608.61
  6. Step 6: Final answer
    x = 88,831.79

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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.