Home / 119,070.82-164,325.95-78,714.60

Finding the Fourth Proportional to 119,070.82, 164,325.95 and 78,714.60

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Solution

The fourth proportional to 119,070.82, 164,325.95 and 78,714.60 is: 108,631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,070.82 : 164,325.95 = 78,714.60 : x
  2. Step 2: Convert to fraction form
    119,070.82/164,325.95 = 78,714.60/x
  3. Step 3: Cross multiply
    119,070.82x = 164,325.95 × 78,714.60
  4. Step 4: Simplify right side
    119,070.82x = 12,934,851,423.87
  5. Step 5: Solve for x
    x = 12,934,851,423.87/119,070.82
  6. Step 6: Final answer
    x = 108,631.58

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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.