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Finding the Fourth Proportional to 145,291.86, 218,265.86 and 86,166.32

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Solution

The fourth proportional to 145,291.86, 218,265.86 and 86,166.32 is: 129,444.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,291.86 : 218,265.86 = 86,166.32 : x
  2. Step 2: Convert to fraction form
    145,291.86/218,265.86 = 86,166.32/x
  3. Step 3: Cross multiply
    145,291.86x = 218,265.86 × 86,166.32
  4. Step 4: Simplify right side
    145,291.86x = 18,807,165,061.92
  5. Step 5: Solve for x
    x = 18,807,165,061.92/145,291.86
  6. Step 6: Final answer
    x = 129,444.04

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1.5x scale

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.