Home / 155,389.16-214,430.82-87,407.48

Finding the Fourth Proportional to 155,389.16, 214,430.82 and 87,407.48

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Solution

The fourth proportional to 155,389.16, 214,430.82 and 87,407.48 is: 120,618.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,389.16 : 214,430.82 = 87,407.48 : x
  2. Step 2: Convert to fraction form
    155,389.16/214,430.82 = 87,407.48/x
  3. Step 3: Cross multiply
    155,389.16x = 214,430.82 × 87,407.48
  4. Step 4: Simplify right side
    155,389.16x = 18,742,857,610.53
  5. Step 5: Solve for x
    x = 18,742,857,610.53/155,389.16
  6. Step 6: Final answer
    x = 120,618.82

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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.