Home / 100,779,142.80-151,168,714.20-80,623,750.80

Finding the Fourth Proportional to 100,779,142.80, 151,168,714.20 and 80,623,750.80

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Solution

The fourth proportional to 100,779,142.80, 151,168,714.20 and 80,623,750.80 is: 120,935,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,779,142.80 : 151,168,714.20 = 80,623,750.80 : x
  2. Step 2: Convert to fraction form
    100,779,142.80/151,168,714.20 = 80,623,750.80/x
  3. Step 3: Cross multiply
    100,779,142.80x = 151,168,714.20 × 80,623,750.80
  4. Step 4: Simplify right side
    100,779,142.80x = 12,187,788,742,417,220
  5. Step 5: Solve for x
    x = 12,187,788,742,417,220/100,779,142.80
  6. Step 6: Final answer
    x = 120,935,626.20

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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.