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Finding the Fourth Proportional to 109,000.02, 150,421.02 and 65,980.50

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Solution

The fourth proportional to 109,000.02, 150,421.02 and 65,980.50 is: 91,053.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,000.02 : 150,421.02 = 65,980.50 : x
  2. Step 2: Convert to fraction form
    109,000.02/150,421.02 = 65,980.50/x
  3. Step 3: Cross multiply
    109,000.02x = 150,421.02 × 65,980.50
  4. Step 4: Simplify right side
    109,000.02x = 9,924,854,110.11
  5. Step 5: Solve for x
    x = 9,924,854,110.11/109,000.02
  6. Step 6: Final answer
    x = 91,053.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.