Home / 642,071,325.20-963,106,987.80-157,397,133.20

Finding the Fourth Proportional to 642,071,325.20, 963,106,987.80 and 157,397,133.20

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Solution

The fourth proportional to 642,071,325.20, 963,106,987.80 and 157,397,133.20 is: 236,095,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,071,325.20 : 963,106,987.80 = 157,397,133.20 : x
  2. Step 2: Convert to fraction form
    642,071,325.20/963,106,987.80 = 157,397,133.20/x
  3. Step 3: Cross multiply
    642,071,325.20x = 963,106,987.80 × 157,397,133.20
  4. Step 4: Simplify right side
    642,071,325.20x = 151,590,278,844,607,360
  5. Step 5: Solve for x
    x = 151,590,278,844,607,360/642,071,325.20
  6. Step 6: Final answer
    x = 236,095,699.80

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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.