Home / 118,345.11-163,317.54-64,631.70

Finding the Fourth Proportional to 118,345.11, 163,317.54 and 64,631.70

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Solution

The fourth proportional to 118,345.11, 163,317.54 and 64,631.70 is: 89,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,345.11 : 163,317.54 = 64,631.70 : x
  2. Step 2: Convert to fraction form
    118,345.11/163,317.54 = 64,631.70/x
  3. Step 3: Cross multiply
    118,345.11x = 163,317.54 × 64,631.70
  4. Step 4: Simplify right side
    118,345.11x = 10,555,490,492.39
  5. Step 5: Solve for x
    x = 10,555,490,492.39/118,345.11
  6. Step 6: Final answer
    x = 89,192.45

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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.