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Finding the Fourth Proportional to 153,666.50, 212,044.20 and 85,677.02

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Solution

The fourth proportional to 153,666.50, 212,044.20 and 85,677.02 is: 118,225.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,666.50 : 212,044.20 = 85,677.02 : x
  2. Step 2: Convert to fraction form
    153,666.50/212,044.20 = 85,677.02/x
  3. Step 3: Cross multiply
    153,666.50x = 212,044.20 × 85,677.02
  4. Step 4: Simplify right side
    153,666.50x = 18,167,315,164.28
  5. Step 5: Solve for x
    x = 18,167,315,164.28/153,666.50
  6. Step 6: Final answer
    x = 118,225.61

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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.