Home / 155,417.40-214,463.73-87,420.83

Finding the Fourth Proportional to 155,417.40, 214,463.73 and 87,420.83

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Solution

The fourth proportional to 155,417.40, 214,463.73 and 87,420.83 is: 120,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,417.40 : 214,463.73 = 87,420.83 : x
  2. Step 2: Convert to fraction form
    155,417.40/214,463.73 = 87,420.83/x
  3. Step 3: Cross multiply
    155,417.40x = 214,463.73 × 87,420.83
  4. Step 4: Simplify right side
    155,417.40x = 18,748,596,209.18
  5. Step 5: Solve for x
    x = 18,748,596,209.18/155,417.40
  6. Step 6: Final answer
    x = 120,633.83

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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.