Home / 142,838.64-197,117.35-79,176.29

Finding the Fourth Proportional to 142,838.64, 197,117.35 and 79,176.29

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Solution

The fourth proportional to 142,838.64, 197,117.35 and 79,176.29 is: 109,263.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,838.64 : 197,117.35 = 79,176.29 : x
  2. Step 2: Convert to fraction form
    142,838.64/197,117.35 = 79,176.29/x
  3. Step 3: Cross multiply
    142,838.64x = 197,117.35 × 79,176.29
  4. Step 4: Simplify right side
    142,838.64x = 15,607,019,284.10
  5. Step 5: Solve for x
    x = 15,607,019,284.10/142,838.64
  6. Step 6: Final answer
    x = 109,263.29

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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.