Home / 145,436.40-218,154.60-89,449.20

Finding the Fourth Proportional to 145,436.40, 218,154.60 and 89,449.20

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Solution

The fourth proportional to 145,436.40, 218,154.60 and 89,449.20 is: 134,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,436.40 : 218,154.60 = 89,449.20 : x
  2. Step 2: Convert to fraction form
    145,436.40/218,154.60 = 89,449.20/x
  3. Step 3: Cross multiply
    145,436.40x = 218,154.60 × 89,449.20
  4. Step 4: Simplify right side
    145,436.40x = 19,513,754,446.32
  5. Step 5: Solve for x
    x = 19,513,754,446.32/145,436.40
  6. Step 6: Final answer
    x = 134,173.80

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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.