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Finding the Fourth Proportional to 145,967.40, 218,864.70 and 75,983.40

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Solution

The fourth proportional to 145,967.40, 218,864.70 and 75,983.40 is: 113,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967.40 : 218,864.70 = 75,983.40 : x
  2. Step 2: Convert to fraction form
    145,967.40/218,864.70 = 75,983.40/x
  3. Step 3: Cross multiply
    145,967.40x = 218,864.70 × 75,983.40
  4. Step 4: Simplify right side
    145,967.40x = 16,630,084,045.98
  5. Step 5: Solve for x
    x = 16,630,084,045.98/145,967.40
  6. Step 6: Final answer
    x = 113,930.12

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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.