Home / 145,158,421.51-200,318,270.97-79,079,462.76

Finding the Fourth Proportional to 145,158,421.51, 200,318,270.97 and 79,079,462.76

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Solution

The fourth proportional to 145,158,421.51, 200,318,270.97 and 79,079,462.76 is: 109,129,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,158,421.51 : 200,318,270.97 = 79,079,462.76 : x
  2. Step 2: Convert to fraction form
    145,158,421.51/200,318,270.97 = 79,079,462.76/x
  3. Step 3: Cross multiply
    145,158,421.51x = 200,318,270.97 × 79,079,462.76
  4. Step 4: Simplify right side
    145,158,421.51x = 15,841,061,249,820,500
  5. Step 5: Solve for x
    x = 15,841,061,249,820,500/145,158,421.51
  6. Step 6: Final answer
    x = 109,129,467.55

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1.5x scale

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.