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Finding the Fourth Proportional to 114,697.80, 172,046.70 and 72,707.40

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Solution

The fourth proportional to 114,697.80, 172,046.70 and 72,707.40 is: 109,061.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,697.80 : 172,046.70 = 72,707.40 : x
  2. Step 2: Convert to fraction form
    114,697.80/172,046.70 = 72,707.40/x
  3. Step 3: Cross multiply
    114,697.80x = 172,046.70 × 72,707.40
  4. Step 4: Simplify right side
    114,697.80x = 12,509,068,235.58
  5. Step 5: Solve for x
    x = 12,509,068,235.58/114,697.80
  6. Step 6: Final answer
    x = 109,061.10

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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.