Home / 80,971,354.60-121,457,031.90-73,161,140.20

Finding the Fourth Proportional to 80,971,354.60, 121,457,031.90 and 73,161,140.20

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Solution

The fourth proportional to 80,971,354.60, 121,457,031.90 and 73,161,140.20 is: 109,741,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,971,354.60 : 121,457,031.90 = 73,161,140.20 : x
  2. Step 2: Convert to fraction form
    80,971,354.60/121,457,031.90 = 73,161,140.20/x
  3. Step 3: Cross multiply
    80,971,354.60x = 121,457,031.90 × 73,161,140.20
  4. Step 4: Simplify right side
    80,971,354.60x = 8,885,934,939,111,773
  5. Step 5: Solve for x
    x = 8,885,934,939,111,773/80,971,354.60
  6. Step 6: Final answer
    x = 109,741,710.30

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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.