Home / 120,382,215.40-180,573,323.10-78,770,385.10

Finding the Fourth Proportional to 120,382,215.40, 180,573,323.10 and 78,770,385.10

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Solution

The fourth proportional to 120,382,215.40, 180,573,323.10 and 78,770,385.10 is: 118,155,577.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,382,215.40 : 180,573,323.10 = 78,770,385.10 : x
  2. Step 2: Convert to fraction form
    120,382,215.40/180,573,323.10 = 78,770,385.10/x
  3. Step 3: Cross multiply
    120,382,215.40x = 180,573,323.10 × 78,770,385.10
  4. Step 4: Simplify right side
    120,382,215.40x = 14,223,830,199,373,724
  5. Step 5: Solve for x
    x = 14,223,830,199,373,724/120,382,215.40
  6. Step 6: Final answer
    x = 118,155,577.65

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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.