Home / 128,126.16-176,813.01-70,765.47

Finding the Fourth Proportional to 128,126.16, 176,813.01 and 70,765.47

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Solution

The fourth proportional to 128,126.16, 176,813.01 and 70,765.47 is: 97,655.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,126.16 : 176,813.01 = 70,765.47 : x
  2. Step 2: Convert to fraction form
    128,126.16/176,813.01 = 70,765.47/x
  3. Step 3: Cross multiply
    128,126.16x = 176,813.01 × 70,765.47
  4. Step 4: Simplify right side
    128,126.16x = 12,512,255,754.76
  5. Step 5: Solve for x
    x = 12,512,255,754.76/128,126.16
  6. Step 6: Final answer
    x = 97,655.75

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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.