Home / 127,704,043.20-191,556,064.80-86,889,374.40

Finding the Fourth Proportional to 127,704,043.20, 191,556,064.80 and 86,889,374.40

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Solution

The fourth proportional to 127,704,043.20, 191,556,064.80 and 86,889,374.40 is: 130,334,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,704,043.20 : 191,556,064.80 = 86,889,374.40 : x
  2. Step 2: Convert to fraction form
    127,704,043.20/191,556,064.80 = 86,889,374.40/x
  3. Step 3: Cross multiply
    127,704,043.20x = 191,556,064.80 × 86,889,374.40
  4. Step 4: Simplify right side
    127,704,043.20x = 16,644,186,632,997,864
  5. Step 5: Solve for x
    x = 16,644,186,632,997,864/127,704,043.20
  6. Step 6: Final answer
    x = 130,334,061.60

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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.