Home / 156,005,665.26-215,287,623.78-86,390,962.08

Finding the Fourth Proportional to 156,005,665.26, 215,287,623.78 and 86,390,962.08

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Solution

The fourth proportional to 156,005,665.26, 215,287,623.78 and 86,390,962.08 is: 119,219,420.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,005,665.26 : 215,287,623.78 = 86,390,962.08 : x
  2. Step 2: Convert to fraction form
    156,005,665.26/215,287,623.78 = 86,390,962.08/x
  3. Step 3: Cross multiply
    156,005,665.26x = 215,287,623.78 × 86,390,962.08
  4. Step 4: Simplify right side
    156,005,665.26x = 18,598,904,942,271,284
  5. Step 5: Solve for x
    x = 18,598,904,942,271,284/156,005,665.26
  6. Step 6: Final answer
    x = 119,219,420.08

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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.