Home / 118,138.05-163,030.55-64,421.69

Finding the Fourth Proportional to 118,138.05, 163,030.55 and 64,421.69

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Solution

The fourth proportional to 118,138.05, 163,030.55 and 64,421.69 is: 88,901.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,138.05 : 163,030.55 = 64,421.69 : x
  2. Step 2: Convert to fraction form
    118,138.05/163,030.55 = 64,421.69/x
  3. Step 3: Cross multiply
    118,138.05x = 163,030.55 × 64,421.69
  4. Step 4: Simplify right side
    118,138.05x = 10,502,703,509.90
  5. Step 5: Solve for x
    x = 10,502,703,509.90/118,138.05
  6. Step 6: Final answer
    x = 88,901.95

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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.