Home / 134,320.06-185,341.12-77,720.50

Finding the Fourth Proportional to 134,320.06, 185,341.12 and 77,720.50

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Solution

The fourth proportional to 134,320.06, 185,341.12 and 77,720.50 is: 107,242.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,320.06 : 185,341.12 = 77,720.50 : x
  2. Step 2: Convert to fraction form
    134,320.06/185,341.12 = 77,720.50/x
  3. Step 3: Cross multiply
    134,320.06x = 185,341.12 × 77,720.50
  4. Step 4: Simplify right side
    134,320.06x = 14,404,804,516.96
  5. Step 5: Solve for x
    x = 14,404,804,516.96/134,320.06
  6. Step 6: Final answer
    x = 107,242.39

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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.