Home / 118,710.91-163,814.55-64,985.53

Finding the Fourth Proportional to 118,710.91, 163,814.55 and 64,985.53

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Solution

The fourth proportional to 118,710.91, 163,814.55 and 64,985.53 is: 89,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,710.91 : 163,814.55 = 64,985.53 : x
  2. Step 2: Convert to fraction form
    118,710.91/163,814.55 = 64,985.53/x
  3. Step 3: Cross multiply
    118,710.91x = 163,814.55 × 64,985.53
  4. Step 4: Simplify right side
    118,710.91x = 10,645,575,353.46
  5. Step 5: Solve for x
    x = 10,645,575,353.46/118,710.91
  6. Step 6: Final answer
    x = 89,676.47

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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.