Home / 105,348.98-145,381.62-57,602.72

Finding the Fourth Proportional to 105,348.98, 145,381.62 and 57,602.72

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Solution

The fourth proportional to 105,348.98, 145,381.62 and 57,602.72 is: 79,491.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,348.98 : 145,381.62 = 57,602.72 : x
  2. Step 2: Convert to fraction form
    105,348.98/145,381.62 = 57,602.72/x
  3. Step 3: Cross multiply
    105,348.98x = 145,381.62 × 57,602.72
  4. Step 4: Simplify right side
    105,348.98x = 8,374,376,750.01
  5. Step 5: Solve for x
    x = 8,374,376,750.01/105,348.98
  6. Step 6: Final answer
    x = 79,491.77

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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.