Home / 128,303.81-177,053.68-70,159.47

Finding the Fourth Proportional to 128,303.81, 177,053.68 and 70,159.47

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Solution

The fourth proportional to 128,303.81, 177,053.68 and 70,159.47 is: 96,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,303.81 : 177,053.68 = 70,159.47 : x
  2. Step 2: Convert to fraction form
    128,303.81/177,053.68 = 70,159.47/x
  3. Step 3: Cross multiply
    128,303.81x = 177,053.68 × 70,159.47
  4. Step 4: Simplify right side
    128,303.81x = 12,421,992,350.35
  5. Step 5: Solve for x
    x = 12,421,992,350.35/128,303.81
  6. Step 6: Final answer
    x = 96,817.02

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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.