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Finding the Fourth Proportional to 122,890,468.80, 184,335,703.20 and 77,304,446.40

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Solution

The fourth proportional to 122,890,468.80, 184,335,703.20 and 77,304,446.40 is: 115,956,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,890,468.80 : 184,335,703.20 = 77,304,446.40 : x
  2. Step 2: Convert to fraction form
    122,890,468.80/184,335,703.20 = 77,304,446.40/x
  3. Step 3: Cross multiply
    122,890,468.80x = 184,335,703.20 × 77,304,446.40
  4. Step 4: Simplify right side
    122,890,468.80x = 14,249,969,487,630,708
  5. Step 5: Solve for x
    x = 14,249,969,487,630,708/122,890,468.80
  6. Step 6: Final answer
    x = 115,956,669.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.