Home / 98,155.04-135,457.68-55,715.36

Finding the Fourth Proportional to 98,155.04, 135,457.68 and 55,715.36

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Solution

The fourth proportional to 98,155.04, 135,457.68 and 55,715.36 is: 76,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,155.04 : 135,457.68 = 55,715.36 : x
  2. Step 2: Convert to fraction form
    98,155.04/135,457.68 = 55,715.36/x
  3. Step 3: Cross multiply
    98,155.04x = 135,457.68 × 55,715.36
  4. Step 4: Simplify right side
    98,155.04x = 7,547,073,405.96
  5. Step 5: Solve for x
    x = 7,547,073,405.96/98,155.04
  6. Step 6: Final answer
    x = 76,889.31

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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.