Home / 86,689,677.80-130,034,516.70-78,753,492.20

Finding the Fourth Proportional to 86,689,677.80, 130,034,516.70 and 78,753,492.20

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Solution

The fourth proportional to 86,689,677.80, 130,034,516.70 and 78,753,492.20 is: 118,130,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,689,677.80 : 130,034,516.70 = 78,753,492.20 : x
  2. Step 2: Convert to fraction form
    86,689,677.80/130,034,516.70 = 78,753,492.20/x
  3. Step 3: Cross multiply
    86,689,677.80x = 130,034,516.70 × 78,753,492.20
  4. Step 4: Simplify right side
    86,689,677.80x = 10,240,672,296,664,220
  5. Step 5: Solve for x
    x = 10,240,672,296,664,220/86,689,677.80
  6. Step 6: Final answer
    x = 118,130,238.30

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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.