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Finding the Fourth Proportional to 102,047.68, 140,828.42 and 56,106.76

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Solution

The fourth proportional to 102,047.68, 140,828.42 and 56,106.76 is: 77,428.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,047.68 : 140,828.42 = 56,106.76 : x
  2. Step 2: Convert to fraction form
    102,047.68/140,828.42 = 56,106.76/x
  3. Step 3: Cross multiply
    102,047.68x = 140,828.42 × 56,106.76
  4. Step 4: Simplify right side
    102,047.68x = 7,901,426,362.12
  5. Step 5: Solve for x
    x = 7,901,426,362.12/102,047.68
  6. Step 6: Final answer
    x = 77,428.77

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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.