Home / 156,478.32-234,756.81-72,298.05

Finding the Fourth Proportional to 156,478.32, 234,756.81 and 72,298.05

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Solution

The fourth proportional to 156,478.32, 234,756.81 and 72,298.05 is: 108,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,478.32 : 234,756.81 = 72,298.05 : x
  2. Step 2: Convert to fraction form
    156,478.32/234,756.81 = 72,298.05/x
  3. Step 3: Cross multiply
    156,478.32x = 234,756.81 × 72,298.05
  4. Step 4: Simplify right side
    156,478.32x = 16,972,459,587.22
  5. Step 5: Solve for x
    x = 16,972,459,587.22/156,478.32
  6. Step 6: Final answer
    x = 108,465.25

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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.