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Finding the Fourth Proportional to 109,064.40, 150,510.42 and 61,315.08

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Solution

The fourth proportional to 109,064.40, 150,510.42 and 61,315.08 is: 84,615.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,064.40 : 150,510.42 = 61,315.08 : x
  2. Step 2: Convert to fraction form
    109,064.40/150,510.42 = 61,315.08/x
  3. Step 3: Cross multiply
    109,064.40x = 150,510.42 × 61,315.08
  4. Step 4: Simplify right side
    109,064.40x = 9,228,558,443.13
  5. Step 5: Solve for x
    x = 9,228,558,443.13/109,064.40
  6. Step 6: Final answer
    x = 84,615.68

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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.