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Finding the Fourth Proportional to 145,154.70, 217,732.05 and 145,154.70

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Solution

The fourth proportional to 145,154.70, 217,732.05 and 145,154.70 is: 217,732.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,154.70 : 217,732.05 = 145,154.70 : x
  2. Step 2: Convert to fraction form
    145,154.70/217,732.05 = 145,154.70/x
  3. Step 3: Cross multiply
    145,154.70x = 217,732.05 × 145,154.70
  4. Step 4: Simplify right side
    145,154.70x = 31,604,830,398.14
  5. Step 5: Solve for x
    x = 31,604,830,398.14/145,154.70
  6. Step 6: Final answer
    x = 217,732.05

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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.