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Finding the Fourth Proportional to 145,643.76, 218,467.08 and 45,801.72

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Solution

The fourth proportional to 145,643.76, 218,467.08 and 45,801.72 is: 68,703.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,643.76 : 218,467.08 = 45,801.72 : x
  2. Step 2: Convert to fraction form
    145,643.76/218,467.08 = 45,801.72/x
  3. Step 3: Cross multiply
    145,643.76x = 218,467.08 × 45,801.72
  4. Step 4: Simplify right side
    145,643.76x = 10,006,168,027.38
  5. Step 5: Solve for x
    x = 10,006,168,027.38/145,643.76
  6. Step 6: Final answer
    x = 68,703.03

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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.