Home / 153,761,621.28-212,190,899.18-86,794,678.31

Finding the Fourth Proportional to 153,761,621.28, 212,190,899.18 and 86,794,678.31

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Solution

The fourth proportional to 153,761,621.28, 212,190,899.18 and 86,794,678.31 is: 119,776,578.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,761,621.28 : 212,190,899.18 = 86,794,678.31 : x
  2. Step 2: Convert to fraction form
    153,761,621.28/212,190,899.18 = 86,794,678.31/x
  3. Step 3: Cross multiply
    153,761,621.28x = 212,190,899.18 × 86,794,678.31
  4. Step 4: Simplify right side
    153,761,621.28x = 18,417,040,833,142,816
  5. Step 5: Solve for x
    x = 18,417,040,833,142,816/153,761,621.28
  6. Step 6: Final answer
    x = 119,776,578.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.