Home / 105,187,395.78-145,155,821.45-58,778,031.06

Finding the Fourth Proportional to 105,187,395.78, 145,155,821.45 and 58,778,031.06

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Solution

The fourth proportional to 105,187,395.78, 145,155,821.45 and 58,778,031.06 is: 81,112,126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,187,395.78 : 145,155,821.45 = 58,778,031.06 : x
  2. Step 2: Convert to fraction form
    105,187,395.78/145,155,821.45 = 58,778,031.06/x
  3. Step 3: Cross multiply
    105,187,395.78x = 145,155,821.45 × 58,778,031.06
  4. Step 4: Simplify right side
    105,187,395.78x = 8,531,973,381,727,914
  5. Step 5: Solve for x
    x = 8,531,973,381,727,914/105,187,395.78
  6. Step 6: Final answer
    x = 81,112,126.78

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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.