Home / 145,368.64-218,137.55-61,122.70

Finding the Fourth Proportional to 145,368.64, 218,137.55 and 61,122.70

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Solution

The fourth proportional to 145,368.64, 218,137.55 and 61,122.70 is: 91,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,368.64 : 218,137.55 = 61,122.70 : x
  2. Step 2: Convert to fraction form
    145,368.64/218,137.55 = 61,122.70/x
  3. Step 3: Cross multiply
    145,368.64x = 218,137.55 × 61,122.70
  4. Step 4: Simplify right side
    145,368.64x = 13,333,156,027.39
  5. Step 5: Solve for x
    x = 13,333,156,027.39/145,368.64
  6. Step 6: Final answer
    x = 91,719.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.