Home / 134,140.50-185,113.89-77,555.52

Finding the Fourth Proportional to 134,140.50, 185,113.89 and 77,555.52

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Solution

The fourth proportional to 134,140.50, 185,113.89 and 77,555.52 is: 107,026.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,140.50 : 185,113.89 = 77,555.52 : x
  2. Step 2: Convert to fraction form
    134,140.50/185,113.89 = 77,555.52/x
  3. Step 3: Cross multiply
    134,140.50x = 185,113.89 × 77,555.52
  4. Step 4: Simplify right side
    134,140.50x = 14,356,603,998.17
  5. Step 5: Solve for x
    x = 14,356,603,998.17/134,140.50
  6. Step 6: Final answer
    x = 107,026.62

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1.5x scale

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.