Home / 86,249,031.20-129,373,546.80-73,260,000.80

Finding the Fourth Proportional to 86,249,031.20, 129,373,546.80 and 73,260,000.80

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Solution

The fourth proportional to 86,249,031.20, 129,373,546.80 and 73,260,000.80 is: 109,890,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,249,031.20 : 129,373,546.80 = 73,260,000.80 : x
  2. Step 2: Convert to fraction form
    86,249,031.20/129,373,546.80 = 73,260,000.80/x
  3. Step 3: Cross multiply
    86,249,031.20x = 129,373,546.80 × 73,260,000.80
  4. Step 4: Simplify right side
    86,249,031.20x = 9,477,906,142,066,836
  5. Step 5: Solve for x
    x = 9,477,906,142,066,836/86,249,031.20
  6. Step 6: Final answer
    x = 109,890,001.20

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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.