Home / 142,314,151.68-196,393,697.28-77,124,055.68

Finding the Fourth Proportional to 142,314,151.68, 196,393,697.28 and 77,124,055.68

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Solution

The fourth proportional to 142,314,151.68, 196,393,697.28 and 77,124,055.68 is: 106,431,287.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,314,151.68 : 196,393,697.28 = 77,124,055.68 : x
  2. Step 2: Convert to fraction form
    142,314,151.68/196,393,697.28 = 77,124,055.68/x
  3. Step 3: Cross multiply
    142,314,151.68x = 196,393,697.28 × 77,124,055.68
  4. Step 4: Simplify right side
    142,314,151.68x = 15,146,678,444,223,786
  5. Step 5: Solve for x
    x = 15,146,678,444,223,786/142,314,151.68
  6. Step 6: Final answer
    x = 106,431,287.86

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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.