Home / 156,445.95-215,815.94-98,988.45

Finding the Fourth Proportional to 156,445.95, 215,815.94 and 98,988.45

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Solution

The fourth proportional to 156,445.95, 215,815.94 and 98,988.45 is: 136,553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,445.95 : 215,815.94 = 98,988.45 : x
  2. Step 2: Convert to fraction form
    156,445.95/215,815.94 = 98,988.45/x
  3. Step 3: Cross multiply
    156,445.95x = 215,815.94 × 98,988.45
  4. Step 4: Simplify right side
    156,445.95x = 21,363,284,890.95
  5. Step 5: Solve for x
    x = 21,363,284,890.95/156,445.95
  6. Step 6: Final answer
    x = 136,553.77

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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.