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Finding the Fourth Proportional to 153,073.92, 211,235.45 and 85,090.76

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Solution

The fourth proportional to 153,073.92, 211,235.45 and 85,090.76 is: 117,421.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,073.92 : 211,235.45 = 85,090.76 : x
  2. Step 2: Convert to fraction form
    153,073.92/211,235.45 = 85,090.76/x
  3. Step 3: Cross multiply
    153,073.92x = 211,235.45 × 85,090.76
  4. Step 4: Simplify right side
    153,073.92x = 17,974,183,497.81
  5. Step 5: Solve for x
    x = 17,974,183,497.81/153,073.92
  6. Step 6: Final answer
    x = 117,421.59

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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.