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Finding the Fourth Proportional to 129,746.94, 179,050.95 and 70,130.94

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Solution

The fourth proportional to 129,746.94, 179,050.95 and 70,130.94 is: 96,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,746.94 : 179,050.95 = 70,130.94 : x
  2. Step 2: Convert to fraction form
    129,746.94/179,050.95 = 70,130.94/x
  3. Step 3: Cross multiply
    129,746.94x = 179,050.95 × 70,130.94
  4. Step 4: Simplify right side
    129,746.94x = 12,557,011,431.39
  5. Step 5: Solve for x
    x = 12,557,011,431.39/129,746.94
  6. Step 6: Final answer
    x = 96,780.79

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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.