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Finding the Fourth Proportional to 159,533.40, 220,155.64 and 87,913.40

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Solution

The fourth proportional to 159,533.40, 220,155.64 and 87,913.40 is: 121,320.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,533.40 : 220,155.64 = 87,913.40 : x
  2. Step 2: Convert to fraction form
    159,533.40/220,155.64 = 87,913.40/x
  3. Step 3: Cross multiply
    159,533.40x = 220,155.64 × 87,913.40
  4. Step 4: Simplify right side
    159,533.40x = 19,354,630,841.58
  5. Step 5: Solve for x
    x = 19,354,630,841.58/159,533.40
  6. Step 6: Final answer
    x = 121,320.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.