Home / 156,287,592-215,676,876.96-86,683,631.04

Finding the Fourth Proportional to 156,287,592, 215,676,876.96 and 86,683,631.04

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Solution

The fourth proportional to 156,287,592, 215,676,876.96 and 86,683,631.04 is: 119,623,410.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,287,592 : 215,676,876.96 = 86,683,631.04 : x
  2. Step 2: Convert to fraction form
    156,287,592/215,676,876.96 = 86,683,631.04/x
  3. Step 3: Cross multiply
    156,287,592x = 215,676,876.96 × 86,683,631.04
  4. Step 4: Simplify right side
    156,287,592x = 18,695,654,826,260,120
  5. Step 5: Solve for x
    x = 18,695,654,826,260,120/156,287,592
  6. Step 6: Final answer
    x = 119,623,410.84

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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.