Home / 189,036,666.40-282,988,129.20-112,320,205.60

Finding the Fourth Proportional to 189,036,666.40, 282,988,129.20 and 112,320,205.60

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Solution

The fourth proportional to 189,036,666.40, 282,988,129.20 and 112,320,205.60 is: 168,143,490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,036,666.40 : 282,988,129.20 = 112,320,205.60 : x
  2. Step 2: Convert to fraction form
    189,036,666.40/282,988,129.20 = 112,320,205.60/x
  3. Step 3: Cross multiply
    189,036,666.40x = 282,988,129.20 × 112,320,205.60
  4. Step 4: Simplify right side
    189,036,666.40x = 31,785,284,854,103,360
  5. Step 5: Solve for x
    x = 31,785,284,854,103,360/189,036,666.40
  6. Step 6: Final answer
    x = 168,143,490.15

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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.