Home / 86,907,936.60-130,361,904.90-77,334,125.40

Finding the Fourth Proportional to 86,907,936.60, 130,361,904.90 and 77,334,125.40

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Solution

The fourth proportional to 86,907,936.60, 130,361,904.90 and 77,334,125.40 is: 116,001,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,907,936.60 : 130,361,904.90 = 77,334,125.40 : x
  2. Step 2: Convert to fraction form
    86,907,936.60/130,361,904.90 = 77,334,125.40/x
  3. Step 3: Cross multiply
    86,907,936.60x = 130,361,904.90 × 77,334,125.40
  4. Step 4: Simplify right side
    86,907,936.60x = 10,081,423,900,919,476
  5. Step 5: Solve for x
    x = 10,081,423,900,919,476/86,907,936.60
  6. Step 6: Final answer
    x = 116,001,188.10

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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.