Home / 128,072.07-176,749.16-70,722.32

Finding the Fourth Proportional to 128,072.07, 176,749.16 and 70,722.32

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Solution

The fourth proportional to 128,072.07, 176,749.16 and 70,722.32 is: 97,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,072.07 : 176,749.16 = 70,722.32 : x
  2. Step 2: Convert to fraction form
    128,072.07/176,749.16 = 70,722.32/x
  3. Step 3: Cross multiply
    128,072.07x = 176,749.16 × 70,722.32
  4. Step 4: Simplify right side
    128,072.07x = 12,500,109,415.89
  5. Step 5: Solve for x
    x = 12,500,109,415.89/128,072.07
  6. Step 6: Final answer
    x = 97,602.15

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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.