Home / 128,210.29-176,928.51-70,849.51

Finding the Fourth Proportional to 128,210.29, 176,928.51 and 70,849.51

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Solution

The fourth proportional to 128,210.29, 176,928.51 and 70,849.51 is: 97,771.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,210.29 : 176,928.51 = 70,849.51 : x
  2. Step 2: Convert to fraction form
    128,210.29/176,928.51 = 70,849.51/x
  3. Step 3: Cross multiply
    128,210.29x = 176,928.51 × 70,849.51
  4. Step 4: Simplify right side
    128,210.29x = 12,535,298,238.53
  5. Step 5: Solve for x
    x = 12,535,298,238.53/128,210.29
  6. Step 6: Final answer
    x = 97,771.39

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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.