Home / 137,423,556-189,640,463.76-78,684,274.08

Finding the Fourth Proportional to 137,423,556, 189,640,463.76 and 78,684,274.08

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Solution

The fourth proportional to 137,423,556, 189,640,463.76 and 78,684,274.08 is: 108,581,983.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,423,556 : 189,640,463.76 = 78,684,274.08 : x
  2. Step 2: Convert to fraction form
    137,423,556/189,640,463.76 = 78,684,274.08/x
  3. Step 3: Cross multiply
    137,423,556x = 189,640,463.76 × 78,684,274.08
  4. Step 4: Simplify right side
    137,423,556x = 14,921,722,227,150,146
  5. Step 5: Solve for x
    x = 14,921,722,227,150,146/137,423,556
  6. Step 6: Final answer
    x = 108,581,983.04

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1.5x scale

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.