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Finding the Fourth Proportional to 111,352.16, 153,459.88 and 79,088.16

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Solution

The fourth proportional to 111,352.16, 153,459.88 and 79,088.16 is: 108,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,352.16 : 153,459.88 = 79,088.16 : x
  2. Step 2: Convert to fraction form
    111,352.16/153,459.88 = 79,088.16/x
  3. Step 3: Cross multiply
    111,352.16x = 153,459.88 × 79,088.16
  4. Step 4: Simplify right side
    111,352.16x = 12,136,859,543.02
  5. Step 5: Solve for x
    x = 12,136,859,543.02/111,352.16
  6. Step 6: Final answer
    x = 108,995.28

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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.