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Finding the Fourth Proportional to 118,017.51, 176,854.55 and 72,942.63

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Solution

The fourth proportional to 118,017.51, 176,854.55 and 72,942.63 is: 109,307.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,017.51 : 176,854.55 = 72,942.63 : x
  2. Step 2: Convert to fraction form
    118,017.51/176,854.55 = 72,942.63/x
  3. Step 3: Cross multiply
    118,017.51x = 176,854.55 × 72,942.63
  4. Step 4: Simplify right side
    118,017.51x = 12,900,235,639.75
  5. Step 5: Solve for x
    x = 12,900,235,639.75/118,017.51
  6. Step 6: Final answer
    x = 109,307.81

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1.5x scale

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.