Home / 152,990,439.72-211,120,646.70-83,374,325.92

Finding the Fourth Proportional to 152,990,439.72, 211,120,646.70 and 83,374,325.92

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Solution

The fourth proportional to 152,990,439.72, 211,120,646.70 and 83,374,325.92 is: 115,053,212.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,990,439.72 : 211,120,646.70 = 83,374,325.92 : x
  2. Step 2: Convert to fraction form
    152,990,439.72/211,120,646.70 = 83,374,325.92/x
  3. Step 3: Cross multiply
    152,990,439.72x = 211,120,646.70 × 83,374,325.92
  4. Step 4: Simplify right side
    152,990,439.72x = 17,602,041,606,406,972
  5. Step 5: Solve for x
    x = 17,602,041,606,406,972/152,990,439.72
  6. Step 6: Final answer
    x = 115,053,212.73

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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.