Home / 86,934,239.60-130,401,359.40-85,658,781.20

Finding the Fourth Proportional to 86,934,239.60, 130,401,359.40 and 85,658,781.20

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Solution

The fourth proportional to 86,934,239.60, 130,401,359.40 and 85,658,781.20 is: 128,488,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,934,239.60 : 130,401,359.40 = 85,658,781.20 : x
  2. Step 2: Convert to fraction form
    86,934,239.60/130,401,359.40 = 85,658,781.20/x
  3. Step 3: Cross multiply
    86,934,239.60x = 130,401,359.40 × 85,658,781.20
  4. Step 4: Simplify right side
    86,934,239.60x = 11,170,021,513,027,164
  5. Step 5: Solve for x
    x = 11,170,021,513,027,164/86,934,239.60
  6. Step 6: Final answer
    x = 128,488,171.80

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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.