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Finding the Fourth Proportional to 145,987.72, 219,011.04 and 61,748.12

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Solution

The fourth proportional to 145,987.72, 219,011.04 and 61,748.12 is: 92,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,987.72 : 219,011.04 = 61,748.12 : x
  2. Step 2: Convert to fraction form
    145,987.72/219,011.04 = 61,748.12/x
  3. Step 3: Cross multiply
    145,987.72x = 219,011.04 × 61,748.12
  4. Step 4: Simplify right side
    145,987.72x = 13,523,520,526.77
  5. Step 5: Solve for x
    x = 13,523,520,526.77/145,987.72
  6. Step 6: Final answer
    x = 92,634.65

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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.