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Finding the Fourth Proportional to 157,030.44, 216,703.02 and 85,410.96

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Solution

The fourth proportional to 157,030.44, 216,703.02 and 85,410.96 is: 117,867.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,030.44 : 216,703.02 = 85,410.96 : x
  2. Step 2: Convert to fraction form
    157,030.44/216,703.02 = 85,410.96/x
  3. Step 3: Cross multiply
    157,030.44x = 216,703.02 × 85,410.96
  4. Step 4: Simplify right side
    157,030.44x = 18,508,812,973.10
  5. Step 5: Solve for x
    x = 18,508,812,973.10/157,030.44
  6. Step 6: Final answer
    x = 117,867.68

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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.