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Finding the Fourth Proportional to 156,603.96, 216,115.02 and 84,984.66

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Solution

The fourth proportional to 156,603.96, 216,115.02 and 84,984.66 is: 117,279.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,603.96 : 216,115.02 = 84,984.66 : x
  2. Step 2: Convert to fraction form
    156,603.96/216,115.02 = 84,984.66/x
  3. Step 3: Cross multiply
    156,603.96x = 216,115.02 × 84,984.66
  4. Step 4: Simplify right side
    156,603.96x = 18,366,461,495.59
  5. Step 5: Solve for x
    x = 18,366,461,495.59/156,603.96
  6. Step 6: Final answer
    x = 117,279.67

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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.