Home / 137,109,979.02-189,211,773.12-78,373,916.58

Finding the Fourth Proportional to 137,109,979.02, 189,211,773.12 and 78,373,916.58

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Solution

The fourth proportional to 137,109,979.02, 189,211,773.12 and 78,373,916.58 is: 108,156,006.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,109,979.02 : 189,211,773.12 = 78,373,916.58 : x
  2. Step 2: Convert to fraction form
    137,109,979.02/189,211,773.12 = 78,373,916.58/x
  3. Step 3: Cross multiply
    137,109,979.02x = 189,211,773.12 × 78,373,916.58
  4. Step 4: Simplify right side
    137,109,979.02x = 14,829,267,722,460,766
  5. Step 5: Solve for x
    x = 14,829,267,722,460,766/137,109,979.02
  6. Step 6: Final answer
    x = 108,156,006.07

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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.