Home / 103,038,020.30-154,557,030.45-72,804,932.30

Finding the Fourth Proportional to 103,038,020.30, 154,557,030.45 and 72,804,932.30

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Solution

The fourth proportional to 103,038,020.30, 154,557,030.45 and 72,804,932.30 is: 109,207,398.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,038,020.30 : 154,557,030.45 = 72,804,932.30 : x
  2. Step 2: Convert to fraction form
    103,038,020.30/154,557,030.45 = 72,804,932.30/x
  3. Step 3: Cross multiply
    103,038,020.30x = 154,557,030.45 × 72,804,932.30
  4. Step 4: Simplify right side
    103,038,020.30x = 11,252,514,138,401,288
  5. Step 5: Solve for x
    x = 11,252,514,138,401,288/103,038,020.30
  6. Step 6: Final answer
    x = 109,207,398.45

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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.