Home / 145,158,421.64-200,318,271.14-79,079,462.89

Finding the Fourth Proportional to 145,158,421.64, 200,318,271.14 and 79,079,462.89

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Solution

The fourth proportional to 145,158,421.64, 200,318,271.14 and 79,079,462.89 is: 109,129,467.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,158,421.64 : 200,318,271.14 = 79,079,462.89 : x
  2. Step 2: Convert to fraction form
    145,158,421.64/200,318,271.14 = 79,079,462.89/x
  3. Step 3: Cross multiply
    145,158,421.64x = 200,318,271.14 × 79,079,462.89
  4. Step 4: Simplify right side
    145,158,421.64x = 15,841,061,288,501,492
  5. Step 5: Solve for x
    x = 15,841,061,288,501,492/145,158,421.64
  6. Step 6: Final answer
    x = 109,129,467.72

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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.