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Finding the Fourth Proportional to 102,798.45, 141,841.13 and 70,916.85

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Solution

The fourth proportional to 102,798.45, 141,841.13 and 70,916.85 is: 97,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,798.45 : 141,841.13 = 70,916.85 : x
  2. Step 2: Convert to fraction form
    102,798.45/141,841.13 = 70,916.85/x
  3. Step 3: Cross multiply
    102,798.45x = 141,841.13 × 70,916.85
  4. Step 4: Simplify right side
    102,798.45x = 10,058,925,785.46
  5. Step 5: Solve for x
    x = 10,058,925,785.46/102,798.45
  6. Step 6: Final answer
    x = 97,850.95

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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.