Home / 105,067,643.90-157,388,889.45-72,756,031.10

Finding the Fourth Proportional to 105,067,643.90, 157,388,889.45 and 72,756,031.10

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Solution

The fourth proportional to 105,067,643.90, 157,388,889.45 and 72,756,031.10 is: 108,986,844.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,067,643.90 : 157,388,889.45 = 72,756,031.10 : x
  2. Step 2: Convert to fraction form
    105,067,643.90/157,388,889.45 = 72,756,031.10/x
  3. Step 3: Cross multiply
    105,067,643.90x = 157,388,889.45 × 72,756,031.10
  4. Step 4: Simplify right side
    105,067,643.90x = 11,450,990,935,618,660
  5. Step 5: Solve for x
    x = 11,450,990,935,618,660/105,067,643.90
  6. Step 6: Final answer
    x = 108,986,844.19

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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.