Home / 130,179,480-179,647,682.40-72,242,051.52

Finding the Fourth Proportional to 130,179,480, 179,647,682.40 and 72,242,051.52

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Solution

The fourth proportional to 130,179,480, 179,647,682.40 and 72,242,051.52 is: 99,694,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,179,480 : 179,647,682.40 = 72,242,051.52 : x
  2. Step 2: Convert to fraction form
    130,179,480/179,647,682.40 = 72,242,051.52/x
  3. Step 3: Cross multiply
    130,179,480x = 179,647,682.40 × 72,242,051.52
  4. Step 4: Simplify right side
    130,179,480x = 12,978,117,127,389,396
  5. Step 5: Solve for x
    x = 12,978,117,127,389,396/130,179,480
  6. Step 6: Final answer
    x = 99,694,031.10

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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.