Home / 128,050.32-176,710.10-70,688.62

Finding the Fourth Proportional to 128,050.32, 176,710.10 and 70,688.62

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Solution

The fourth proportional to 128,050.32, 176,710.10 and 70,688.62 is: 97,550.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,050.32 : 176,710.10 = 70,688.62 : x
  2. Step 2: Convert to fraction form
    128,050.32/176,710.10 = 70,688.62/x
  3. Step 3: Cross multiply
    128,050.32x = 176,710.10 × 70,688.62
  4. Step 4: Simplify right side
    128,050.32x = 12,491,393,109.06
  5. Step 5: Solve for x
    x = 12,491,393,109.06/128,050.32
  6. Step 6: Final answer
    x = 97,550.66

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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.