Home / 120,342.08-180,347.52-102,480.32

Finding the Fourth Proportional to 120,342.08, 180,347.52 and 102,480.32

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Solution

The fourth proportional to 120,342.08, 180,347.52 and 102,480.32 is: 153,579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,342.08 : 180,347.52 = 102,480.32 : x
  2. Step 2: Convert to fraction form
    120,342.08/180,347.52 = 102,480.32/x
  3. Step 3: Cross multiply
    120,342.08x = 180,347.52 × 102,480.32
  4. Step 4: Simplify right side
    120,342.08x = 18,482,071,560.81
  5. Step 5: Solve for x
    x = 18,482,071,560.81/120,342.08
  6. Step 6: Final answer
    x = 153,579.46

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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.