Home / 145,856.10-218,438.55-89,868.90

Finding the Fourth Proportional to 145,856.10, 218,438.55 and 89,868.90

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Solution

The fourth proportional to 145,856.10, 218,438.55 and 89,868.90 is: 134,590.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,856.10 : 218,438.55 = 89,868.90 : x
  2. Step 2: Convert to fraction form
    145,856.10/218,438.55 = 89,868.90/x
  3. Step 3: Cross multiply
    145,856.10x = 218,438.55 × 89,868.90
  4. Step 4: Simplify right side
    145,856.10x = 19,630,832,206.10
  5. Step 5: Solve for x
    x = 19,630,832,206.10/145,856.10
  6. Step 6: Final answer
    x = 134,590.41

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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.