Home / 120,146.07-180,237.79-40,159.28

Finding the Fourth Proportional to 120,146.07, 180,237.79 and 40,159.28

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Solution

The fourth proportional to 120,146.07, 180,237.79 and 40,159.28 is: 60,245.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,146.07 : 180,237.79 = 40,159.28 : x
  2. Step 2: Convert to fraction form
    120,146.07/180,237.79 = 40,159.28/x
  3. Step 3: Cross multiply
    120,146.07x = 180,237.79 × 40,159.28
  4. Step 4: Simplify right side
    120,146.07x = 7,238,219,875.19
  5. Step 5: Solve for x
    x = 7,238,219,875.19/120,146.07
  6. Step 6: Final answer
    x = 60,245.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.