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Finding the Fourth Proportional to 129,045.00, 178,110.55 and 71,703.98

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Solution

The fourth proportional to 129,045.00, 178,110.55 and 71,703.98 is: 98,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,045.00 : 178,110.55 = 71,703.98 : x
  2. Step 2: Convert to fraction form
    129,045.00/178,110.55 = 71,703.98/x
  3. Step 3: Cross multiply
    129,045.00x = 178,110.55 × 71,703.98
  4. Step 4: Simplify right side
    129,045.00x = 12,771,235,780.52
  5. Step 5: Solve for x
    x = 12,771,235,780.52/129,045.00
  6. Step 6: Final answer
    x = 98,967.31

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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.