Home / 85,549,509.10-128,324,263.65-82,526,200.30

Finding the Fourth Proportional to 85,549,509.10, 128,324,263.65 and 82,526,200.30

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Solution

The fourth proportional to 85,549,509.10, 128,324,263.65 and 82,526,200.30 is: 123,789,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549,509.10 : 128,324,263.65 = 82,526,200.30 : x
  2. Step 2: Convert to fraction form
    85,549,509.10/128,324,263.65 = 82,526,200.30/x
  3. Step 3: Cross multiply
    85,549,509.10x = 128,324,263.65 × 82,526,200.30
  4. Step 4: Simplify right side
    85,549,509.10x = 10,590,113,885,329,910
  5. Step 5: Solve for x
    x = 10,590,113,885,329,910/85,549,509.10
  6. Step 6: Final answer
    x = 123,789,300.45

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Similar ratio
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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.