Home / 118,430.88-163,434.42-64,715.91

Finding the Fourth Proportional to 118,430.88, 163,434.42 and 64,715.91

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Solution

The fourth proportional to 118,430.88, 163,434.42 and 64,715.91 is: 89,307.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,430.88 : 163,434.42 = 64,715.91 : x
  2. Step 2: Convert to fraction form
    118,430.88/163,434.42 = 64,715.91/x
  3. Step 3: Cross multiply
    118,430.88x = 163,434.42 × 64,715.91
  4. Step 4: Simplify right side
    118,430.88x = 10,576,807,215.62
  5. Step 5: Solve for x
    x = 10,576,807,215.62/118,430.88
  6. Step 6: Final answer
    x = 89,307.85

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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.