Home / 145,416.30-218,124.45-89,429.10

Finding the Fourth Proportional to 145,416.30, 218,124.45 and 89,429.10

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Solution

The fourth proportional to 145,416.30, 218,124.45 and 89,429.10 is: 134,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,416.30 : 218,124.45 = 89,429.10 : x
  2. Step 2: Convert to fraction form
    145,416.30/218,124.45 = 89,429.10/x
  3. Step 3: Cross multiply
    145,416.30x = 218,124.45 × 89,429.10
  4. Step 4: Simplify right side
    145,416.30x = 19,506,673,251.50
  5. Step 5: Solve for x
    x = 19,506,673,251.50/145,416.30
  6. Step 6: Final answer
    x = 134,143.65

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1.5x scale

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.