Home / 155,807,716-215,020,979.04-86,191,896.64

Finding the Fourth Proportional to 155,807,716, 215,020,979.04 and 86,191,896.64

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Solution

The fourth proportional to 155,807,716, 215,020,979.04 and 86,191,896.64 is: 118,948,319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,807,716 : 215,020,979.04 = 86,191,896.64 : x
  2. Step 2: Convert to fraction form
    155,807,716/215,020,979.04 = 86,191,896.64/x
  3. Step 3: Cross multiply
    155,807,716x = 215,020,979.04 × 86,191,896.64
  4. Step 4: Simplify right side
    155,807,716x = 18,533,066,000,847,284
  5. Step 5: Solve for x
    x = 18,533,066,000,847,284/155,807,716
  6. Step 6: Final answer
    x = 118,948,319.61

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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.