Home / 87,228,009.20-130,842,013.80-86,630,812.40

Finding the Fourth Proportional to 87,228,009.20, 130,842,013.80 and 86,630,812.40

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Solution

The fourth proportional to 87,228,009.20, 130,842,013.80 and 86,630,812.40 is: 129,946,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,228,009.20 : 130,842,013.80 = 86,630,812.40 : x
  2. Step 2: Convert to fraction form
    87,228,009.20/130,842,013.80 = 86,630,812.40/x
  3. Step 3: Cross multiply
    87,228,009.20x = 130,842,013.80 × 86,630,812.40
  4. Step 4: Simplify right side
    87,228,009.20x = 11,334,949,951,546,012
  5. Step 5: Solve for x
    x = 11,334,949,951,546,012/87,228,009.20
  6. Step 6: Final answer
    x = 129,946,218.60

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1.5x scale

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.