Home / 124,401,906-171,653,372.64-72,178,970.40

Finding the Fourth Proportional to 124,401,906, 171,653,372.64 and 72,178,970.40

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Solution

The fourth proportional to 124,401,906, 171,653,372.64 and 72,178,970.40 is: 99,594,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,401,906 : 171,653,372.64 = 72,178,970.40 : x
  2. Step 2: Convert to fraction form
    124,401,906/171,653,372.64 = 72,178,970.40/x
  3. Step 3: Cross multiply
    124,401,906x = 171,653,372.64 × 72,178,970.40
  4. Step 4: Simplify right side
    124,401,906x = 12,389,763,702,842,730
  5. Step 5: Solve for x
    x = 12,389,763,702,842,730/124,401,906
  6. Step 6: Final answer
    x = 99,594,645.30

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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.