Home / 145,432.16-218,231.40-66,545.72

Finding the Fourth Proportional to 145,432.16, 218,231.40 and 66,545.72

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Solution

The fourth proportional to 145,432.16, 218,231.40 and 66,545.72 is: 99,856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,432.16 : 218,231.40 = 66,545.72 : x
  2. Step 2: Convert to fraction form
    145,432.16/218,231.40 = 66,545.72/x
  3. Step 3: Cross multiply
    145,432.16x = 218,231.40 × 66,545.72
  4. Step 4: Simplify right side
    145,432.16x = 14,522,365,639.61
  5. Step 5: Solve for x
    x = 14,522,365,639.61/145,432.16
  6. Step 6: Final answer
    x = 99,856.63

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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.