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Finding the Fourth Proportional to 129,602.64, 178,859.88 and 97,715.28

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Solution

The fourth proportional to 129,602.64, 178,859.88 and 97,715.28 is: 134,853.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,602.64 : 178,859.88 = 97,715.28 : x
  2. Step 2: Convert to fraction form
    129,602.64/178,859.88 = 97,715.28/x
  3. Step 3: Cross multiply
    129,602.64x = 178,859.88 × 97,715.28
  4. Step 4: Simplify right side
    129,602.64x = 17,477,343,254.97
  5. Step 5: Solve for x
    x = 17,477,343,254.97/129,602.64
  6. Step 6: Final answer
    x = 134,853.30

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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.