Home / 155,994,346.26-215,272,148.85-86,379,708.69

Finding the Fourth Proportional to 155,994,346.26, 215,272,148.85 and 86,379,708.69

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Solution

The fourth proportional to 155,994,346.26, 215,272,148.85 and 86,379,708.69 is: 119,203,970.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,994,346.26 : 215,272,148.85 = 86,379,708.69 : x
  2. Step 2: Convert to fraction form
    155,994,346.26/215,272,148.85 = 86,379,708.69/x
  3. Step 3: Cross multiply
    155,994,346.26x = 215,272,148.85 × 86,379,708.69
  4. Step 4: Simplify right side
    155,994,346.26x = 18,595,145,506,733,316
  5. Step 5: Solve for x
    x = 18,595,145,506,733,316/155,994,346.26
  6. Step 6: Final answer
    x = 119,203,970.87

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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.