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Finding the Fourth Proportional to 129,600.51, 178,730.09 and 88,823.90

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Solution

The fourth proportional to 129,600.51, 178,730.09 and 88,823.90 is: 122,495.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,600.51 : 178,730.09 = 88,823.90 : x
  2. Step 2: Convert to fraction form
    129,600.51/178,730.09 = 88,823.90/x
  3. Step 3: Cross multiply
    129,600.51x = 178,730.09 × 88,823.90
  4. Step 4: Simplify right side
    129,600.51x = 15,875,502,303.38
  5. Step 5: Solve for x
    x = 15,875,502,303.38/129,600.51
  6. Step 6: Final answer
    x = 122,495.68

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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.