Home / 130,536.77-180,038.09-87,501.47

Finding the Fourth Proportional to 130,536.77, 180,038.09 and 87,501.47

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Solution

The fourth proportional to 130,536.77, 180,038.09 and 87,501.47 is: 120,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,536.77 : 180,038.09 = 87,501.47 : x
  2. Step 2: Convert to fraction form
    130,536.77/180,038.09 = 87,501.47/x
  3. Step 3: Cross multiply
    130,536.77x = 180,038.09 × 87,501.47
  4. Step 4: Simplify right side
    130,536.77x = 15,753,596,849.56
  5. Step 5: Solve for x
    x = 15,753,596,849.56/130,536.77
  6. Step 6: Final answer
    x = 120,683.22

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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.