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Finding the Fourth Proportional to 102,290.30, 153,003.45 and 91,835.90

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Solution

The fourth proportional to 102,290.30, 153,003.45 and 91,835.90 is: 137,366.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,290.30 : 153,003.45 = 91,835.90 : x
  2. Step 2: Convert to fraction form
    102,290.30/153,003.45 = 91,835.90/x
  3. Step 3: Cross multiply
    102,290.30x = 153,003.45 × 91,835.90
  4. Step 4: Simplify right side
    102,290.30x = 14,051,209,533.86
  5. Step 5: Solve for x
    x = 14,051,209,533.86/102,290.30
  6. Step 6: Final answer
    x = 137,366.00

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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.