Home / 147,788.90-221,683.35-85,427.30

Finding the Fourth Proportional to 147,788.90, 221,683.35 and 85,427.30

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Solution

The fourth proportional to 147,788.90, 221,683.35 and 85,427.30 is: 128,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,788.90 : 221,683.35 = 85,427.30 : x
  2. Step 2: Convert to fraction form
    147,788.90/221,683.35 = 85,427.30/x
  3. Step 3: Cross multiply
    147,788.90x = 221,683.35 × 85,427.30
  4. Step 4: Simplify right side
    147,788.90x = 18,937,810,045.46
  5. Step 5: Solve for x
    x = 18,937,810,045.46/147,788.90
  6. Step 6: Final answer
    x = 128,140.95

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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.