Home / 145,186,734-200,355,159.20-79,107,779.22

Finding the Fourth Proportional to 145,186,734, 200,355,159.20 and 79,107,779.22

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Solution

The fourth proportional to 145,186,734, 200,355,159.20 and 79,107,779.22 is: 109,167,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,186,734 : 200,355,159.20 = 79,107,779.22 : x
  2. Step 2: Convert to fraction form
    145,186,734/200,355,159.20 = 79,107,779.22/x
  3. Step 3: Cross multiply
    145,186,734x = 200,355,159.20 × 79,107,779.22
  4. Step 4: Simplify right side
    145,186,734x = 15,849,651,699,581,550
  5. Step 5: Solve for x
    x = 15,849,651,699,581,550/145,186,734
  6. Step 6: Final answer
    x = 109,167,354.78

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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.