Home / 90,782,461.80-136,173,692.70-80,011,924.20

Finding the Fourth Proportional to 90,782,461.80, 136,173,692.70 and 80,011,924.20

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Solution

The fourth proportional to 90,782,461.80, 136,173,692.70 and 80,011,924.20 is: 120,017,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,782,461.80 : 136,173,692.70 = 80,011,924.20 : x
  2. Step 2: Convert to fraction form
    90,782,461.80/136,173,692.70 = 80,011,924.20/x
  3. Step 3: Cross multiply
    90,782,461.80x = 136,173,692.70 × 80,011,924.20
  4. Step 4: Simplify right side
    90,782,461.80x = 10,895,519,178,346,492
  5. Step 5: Solve for x
    x = 10,895,519,178,346,492/90,782,461.80
  6. Step 6: Final answer
    x = 120,017,886.30

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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.