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Finding the Fourth Proportional to 145,287.86, 200,500.95 and 79,875.89

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Solution

The fourth proportional to 145,287.86, 200,500.95 and 79,875.89 is: 110,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,287.86 : 200,500.95 = 79,875.89 : x
  2. Step 2: Convert to fraction form
    145,287.86/200,500.95 = 79,875.89/x
  3. Step 3: Cross multiply
    145,287.86x = 200,500.95 × 79,875.89
  4. Step 4: Simplify right side
    145,287.86x = 16,015,191,876.00
  5. Step 5: Solve for x
    x = 16,015,191,876.00/145,287.86
  6. Step 6: Final answer
    x = 110,230.77

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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.