Home / 100,468,274.58-138,636,742.50-56,406,667.86

Finding the Fourth Proportional to 100,468,274.58, 138,636,742.50 and 56,406,667.86

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Solution

The fourth proportional to 100,468,274.58, 138,636,742.50 and 56,406,667.86 is: 77,835,881.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,468,274.58 : 138,636,742.50 = 56,406,667.86 : x
  2. Step 2: Convert to fraction form
    100,468,274.58/138,636,742.50 = 56,406,667.86/x
  3. Step 3: Cross multiply
    100,468,274.58x = 138,636,742.50 × 56,406,667.86
  4. Step 4: Simplify right side
    100,468,274.58x = 7,820,036,687,389,846
  5. Step 5: Solve for x
    x = 7,820,036,687,389,846/100,468,274.58
  6. Step 6: Final answer
    x = 77,835,881.23

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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.