Home / 84,492,917.60-127,009,981.20-78,502,287.20

Finding the Fourth Proportional to 84,492,917.60, 127,009,981.20 and 78,502,287.20

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Solution

The fourth proportional to 84,492,917.60, 127,009,981.20 and 78,502,287.20 is: 118,004,849.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,492,917.60 : 127,009,981.20 = 78,502,287.20 : x
  2. Step 2: Convert to fraction form
    84,492,917.60/127,009,981.20 = 78,502,287.20/x
  3. Step 3: Cross multiply
    84,492,917.60x = 127,009,981.20 × 78,502,287.20
  4. Step 4: Simplify right side
    84,492,917.60x = 9,970,574,021,429,002
  5. Step 5: Solve for x
    x = 9,970,574,021,429,002/84,492,917.60
  6. Step 6: Final answer
    x = 118,004,849.46

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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.