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Finding the Fourth Proportional to 112,980.84, 169,204.02 and 98,108.96

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Solution

The fourth proportional to 112,980.84, 169,204.02 and 98,108.96 is: 146,931.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,980.84 : 169,204.02 = 98,108.96 : x
  2. Step 2: Convert to fraction form
    112,980.84/169,204.02 = 98,108.96/x
  3. Step 3: Cross multiply
    112,980.84x = 169,204.02 × 98,108.96
  4. Step 4: Simplify right side
    112,980.84x = 16,600,430,430.02
  5. Step 5: Solve for x
    x = 16,600,430,430.02/112,980.84
  6. Step 6: Final answer
    x = 146,931.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.