Home / 113,988.53-157,323.30-77,178.05

Finding the Fourth Proportional to 113,988.53, 157,323.30 and 77,178.05

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Solution

The fourth proportional to 113,988.53, 157,323.30 and 77,178.05 is: 106,518.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,988.53 : 157,323.30 = 77,178.05 : x
  2. Step 2: Convert to fraction form
    113,988.53/157,323.30 = 77,178.05/x
  3. Step 3: Cross multiply
    113,988.53x = 157,323.30 × 77,178.05
  4. Step 4: Simplify right side
    113,988.53x = 12,141,904,726.95
  5. Step 5: Solve for x
    x = 12,141,904,726.95/113,988.53
  6. Step 6: Final answer
    x = 106,518.66

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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.