Home / 145,878.36-218,840.90-61,639.35

Finding the Fourth Proportional to 145,878.36, 218,840.90 and 61,639.35

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Solution

The fourth proportional to 145,878.36, 218,840.90 and 61,639.35 is: 92,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,878.36 : 218,840.90 = 61,639.35 : x
  2. Step 2: Convert to fraction form
    145,878.36/218,840.90 = 61,639.35/x
  3. Step 3: Cross multiply
    145,878.36x = 218,840.90 × 61,639.35
  4. Step 4: Simplify right side
    145,878.36x = 13,489,210,521.22
  5. Step 5: Solve for x
    x = 13,489,210,521.22/145,878.36
  6. Step 6: Final answer
    x = 92,468.89

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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.