Home / 155,847,505.77-215,069,809.91-86,235,820.65

Finding the Fourth Proportional to 155,847,505.77, 215,069,809.91 and 86,235,820.65

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Solution

The fourth proportional to 155,847,505.77, 215,069,809.91 and 86,235,820.65 is: 119,005,571.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,847,505.77 : 215,069,809.91 = 86,235,820.65 : x
  2. Step 2: Convert to fraction form
    155,847,505.77/215,069,809.91 = 86,235,820.65/x
  3. Step 3: Cross multiply
    155,847,505.77x = 215,069,809.91 × 86,235,820.65
  4. Step 4: Simplify right side
    155,847,505.77x = 18,546,721,554,197,176
  5. Step 5: Solve for x
    x = 18,546,721,554,197,176/155,847,505.77
  6. Step 6: Final answer
    x = 119,005,571.91

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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.